Start Programming C With raspberry Pi

Start Programming C With raspberry Pi This set of instructions wont suit everybody but Ill try to be as generic as possible. I installed the Debian Squeeze distribution, so the programming tutorials are based on that. Initially, Im starting off by compiling programs on the Raspi but given its relative slowness to any PC in the last ten years, its probably best to switch to developing on another PC and copying the executables over. Ill cover that in a future tutorial, but for now, its about compiling on the Raspi. Preparing for Developing The starting point is you have a Raspi with a working distribution. In my case, its Debian Squeeze which I burnt with instructions from the RPI Easy SD Card Setup. Make sure you bookmark the Wiki as its got tons of useful stuff. If your Raspi has booted and youve logged in (username pi, p/w raspberry) then type gcc - v at the command line. Youll see something like this: Using built-in specs.Target: arm-linux-gnueabiConfigured with: ../src/configure -v with-pkgversionDebian 4.4.5-8 with-bugurlfile:///usr/share/doc/gcc-4.4/README.Bugsenable-languagesc,c,fortran,objc,obj-c prefix/usr program-suffix-4.4 enable-shared enable-multiarch enable-linker-build-idwith-system-zlib libexecdir/usr/lib without-included-gettext enable-threadsposix with-gxx-include-dir/usr/include/c/4.4 libdir/usr/libenable-nls enable-clocalegnu enable-libstdcxx-debug enable-objc-gc disable-sjlj-exceptions enable-checkingrelease buildarm-linux-gnueabihostarm-linux-gnueabi targetarm-linux-gnueabiThread model: posixgcc version 4.4.5 (Debian 4.4.5-8) Install Samba One of the first things I did and recommend to you if you have a Windows PC on the same network as your Raspi is to install and setup Samba so you can access the Raspi. Then I issued this command: gcc -v l.txt To get the above listing into the file l.txt that I could view and copy on my Windows PC. Even if you are compiling on the Raspi, you can edit source code from your Windows box and compile on the Raspi. You cant just compile on your Windows box using say MinGW unless your gcc is configured to output ARM code. That can be done but lets learn to walk first and learn how to compile and run programs on the Raspi. Read up on Cygwin and MinGW. GUI or Terminal Ill assume that you are new to Linux, so apologies if you know it already. You can do most of the work from the Linux terminal ( command line). But it can be easier if you fire up the GUI (Graphical User Interface) to have a look around the file system. Type startx to do that. The mouse cursor will appear and you can click in the bottom left-hand corner (it looks like a mountain( to see the menus. Click on Accessories and run File Manager to let you view folders and files. You can close it down any time and return to the terminal by clicking the little red button with a white circle in the bottom right-hand corner. Then click on Logout to return to the command line. You may prefer to have the GUI open all the time. When you want a terminal click the bottom left button then click Other on the menu and Terminal. In the Terminal, you can close it by typing Exit or click the Windows like x in the top right-hand corner. Folders The Samba instructions on the Wiki tell you how to setup a public folder. Its probably best to do that. Your home folder (pi) will be readonly and you want to write to the public folder. I created a sub-folder in public called code and created the hello.c file listed below in it from my Windows PC. If you prefer to edit on the PI, it comes with a text editor called Nano. You can run it from the GUI on the other menu or from the terminal by typing sudo nanosudo nano hello.c The sudo elevates nano so it can write files with root access. You can run it just as nano, but in some folders that wont give you write access and you wont be able to save files so running things with sudo is usually best. Hello World Heres the code: #includeint main() {printf(Hello World\n);return 0;} Now type in gcc -o hello hello.c and it will compile in a second or two. Take a look at the files in the terminal by typing in ls -al and youll see a file listing like this: drwxrwxx 2 pi users 4096 Jun 22 22:19 .drwxrwxr-x 3 root users 4096 Jun 22 22:05 ..-rwxr-xr-x 1 pi pi 5163 Jun 22 22:15 hello-rw-rw 1 pi users 78 Jun 22 22:16 hello.c and type in ./hello to execute the compiled program and see Hello World. That completes the first of the programming in C on your Raspberry Pi tutorials. Into games programming in C? Try our free Games programming in C Tutorials.

The Balance Sheet essays

The Balance Sheet essays Although the balance sheet was first implemented just a couple of centuries ago, it has quckly developed and sophisticated to become nowadays a widely used and powerful tool in the hands of professional users, well known and popular even among the mass public. In spite of its prominence, or may be because of it, the balance sheet can not be easily and fully described in a few words, but still, if we leave aside its various functions and forms and any other subjective factors, we can state that the balance sheet is a summary of an enterprises' assets, liabilities and equity at a specific moment of time. To simplify this description even further we could say that the balance sheet shows an entity's possessions, obligations and others' debts to it. The "objective" point of view however is often too restrictive, and the most simple things many times prove to be rather complex... Among the thousand more complex definitions appended to the balance sheet one of my favorites is the definition given by .... according to which the balance sheet is a statement meant to communicate information about the financial position of an enterprise at a particular point in time, summarizing the information contained in accounting records in a clear and intelligible form, giving information about the financial state of an enterprise and indicating the relative liquidity of the assets, showing the liabilities of the enterprise (i.e. what the enterprise owes and when these amounts will fall due), able to assist the user in evaluating the financial position of the enterprise, being however only part of the data needed by users. Or to summarize this long description with which I completely agree, I could say that although the balance sheet is one of the most outstanding instruments in the hands of financial analysts, managers, investors and other users, its importance should not be over emphasized, it has to be viewed along with many other documents, and...

Global Economic Environment and Marketing Assignment

Global Economic Environment and Marketing - Assignment Example had made a net of over $50 million by the end of 1979 and it had become a household name in the United States as the provider of personal computers (Reuters 2014). Wozniak retired in 1985 and Jobs left later that year owing to power issues within the company management. Between Jobs departure and his return to Apple in 1997, Apple went through a rough patch with changes in leadership and loss of consumer confidence thereby reduced growth prospects. Jobs major idea was to rejuvenate Apple by developing more sophisticated and stylish products which were also user friendly (Gillam, 2012). He also opened up Apple stores as the biggest flagship project towards making global the company and its products. He also ensured that software production became a forefront product. His innovative ideas saw Apple become the second most valuable company by 2010 according to Gillam (2012). Today, the company’s main strategy is the improvement of the current products which is well seen in the current unveiling of iPhone 6. It is worth mentioning that the company also owns FileMaker Inc., Braeburn Capital, Hopstop.com Inc. and Locationary Inc. among many others as

Afro-American slavery Essay Example | Topics and Well Written Essays - 2250 words

Afro-American slavery - Essay Example Slavery in America has been highly supported by the law. In 1686 the exchange of goods between blacks or between blacks and freemen was declared as not legal (Gikandi 244). In 1705 the House of Burgesses in Virginia promoted a series of laws aiming to ensure that slaves in the region would not be able to fight for their freedom in the future (Wood 11); also the above laws aimed to protect the interests of landowners in regard to their involvement in slavery (Wood 11). At the next level, in 1714, another law ‘prohibited blacks from planting their own corn, rice or peas’ (Gikandi 244). These laws aimed to control the efforts of slaves to improve their living conditions and to increase their autonomy. In practice, these laws were not fully applied, mostly because of the conflicts of interests developed in each particular region; for instance, in South Carolina masters preferred to allow a greater autonomy to slaves so that slavery is continued without problems, while in Vir ginia, a different attitude regarding the control over the slaves’ life was developed. This trend has led to the development of different systems of slaves’ control. In South Carolina the task system was promoted allowing to the slaves to use their free time as they wish; in Virginia the gang system was based on the close supervision of slaves almost all day prevented slaves from organizing their life. The cultivation of each section was assigned to a particular slave (Olwell 46), meaning that each slave had the total responsibility for the cultivation of the specific section.

Google China Essay Example for Free

Google China Essay Chinese language search engine launched in china in 2006 (pg. 37) Company was private until 2004, Page and Brin decided to conduct a Dutch auction Dutch auction was designed to â€Å"democratize IPO share allocation and afford companies and early investors the best price†( pg. 40) Company 5,680 employees were scattered throughout the world (pg. 41) 2005 positive cash flow of 3. 45 billion (pg. 41) Revenue of $6. 14 billion (pg. 41) Google motto â€Å"don’t be evil† (pg. 42) â€Å"With a population of 1. 6 billion people, China had become an attractive market for many U. S. -based multinationals† Chinese internet controlled through both governmental and censorship (self-Censorship) (pg. 47) Chinese government was able to monitor all foreign internet traffic by routers (URLs) (pg. 47) In 2002, google. com was inaccessible for 2 weeks, it was slow and temperamental for all Chinese users (pg. 53) Google was losing market share to Baidu, yahoo, an Microsoft (pg. 53) Step 3: Write the problem statement. Tom Maclean, the director of International Business for Google Inc. was facing whether to continue google. cn in China or just leave it as google. com, even though google. Would be a slower search engine in china and may not give Google Inc. any profit. Maclean has to address this problem within 24 hours or Google Inc. may lose profits from China. Step 4: State an objective for the manager involved. Short-term objectives: 1. To- Rebuild reputation that was damaged 2. To- maintain both search engines Long-term objectives: 1. To- Google should continue with their mission to organize the world’s information and make it universally accessible and useful 2. To – create better methods to make google. cn filter the Chinese information Step 5: Identify and rank order critical issues related to the problem. Here lies the heart of the case; if you miss a critical issue, you miss the opportunity to solve the case to the satisfaction of involved stakeholders. Identify least to most critical. Specify which issue should be addressed first. 1. The damage caused by Google Inc. 2. finding methods in filtering google. cn 3. Google. cn whether it should continue in China, since Google was losing market share to others such as yahoo, Microsoft, and Baidu Step 6: Consider relevant information and underlying assumptions related to the problem. Fact- Chinese government censors search results about â€Å"harmful Material† Fact- China is a great place to obtain investments Assumption- Google. cn would do good Step 7: List possible solutions to the problem. 1. First solution. Google should get rid of Google. cn in china and just let it be google. com Advantages Advantage- don’t have to worry about the censorship and regulations Advantage- all places would have the same search engine Disadvantages Disadvantage- slower search engine Disadvantage- Chinese wouldn’t use it at a search engine Possible Outcomes Best: Google. com would be a good search engine and the Chinese will use it Most Likely: Chinese will not use google. com as there search engine, causing Google to lose money Least Likely: Google. com would be the Chinese search engine 2. Second solution Google will continue on with google. cn in China Advantages Advantage- it would make Google Inc. profit Advantage- Google will rebuild reputation that was damaged Disadvantages Disadvantage- Chinese users would be aware of the filtering but not the exact nature of filtering Disadvantage- everything goes through the Chinese government Possible Outcomes Best: Google. cn will be the best search engine and Google Inc. will rebuild the damaged caused Most Likely: Google. cn will be good and make Google Inc. profit Least Likely: Chinese government won’t get involved in google. cn Step 8: Select the best solution. What should the manager do and why? Support with evidence. Google Inc. should move forward with google. cn and persuade china to lower their regulations and expectations. Step 9: Decide how to implement the solution. Create a plan of action—actions required, time line, resources, personnel, impact on the organization, measurement of results. Tom Maclean should implement the solution in the meeting he is going to have, let them know that google. cn will continue to work in China but it will be more organized and need the Chinese government to lower their expectations. Step 10: Explain how to communicate the solution. How to communicate the message and to whom. Consider the needs of your target audience and the needs of stakeholders. Think about timing as well. He should communicate the message through a press conference, within the next day of his decision.

Hypocrisy in Hawthornes Scarlet Letter Essay -- Hawthorne Scarlet Let

Hypocrisy in Hawthorne's Scarlet Letter Hypocrisy, often seen as one of the vilest manifestations of the human ego, is also one of the most inevitable and foreseeable. It is the simplest, and yet one of the most intricate aspects of being human. We all wish to judge and not be judged, for our own voice is always the strongest in our mind. Hypocrisy runs rampant in daily life; all one has to do is turn on the television set at our convenience to be forced to consider the meanings and implications of our own actions. Can we, in all seriousness, sing of peace on earth and goodwill towards men in the coming weeks while we continue to drop bombs and execute other military actions in the name of revenge? Should we trust politicians who want to sacrifice civil rights in order, they say, to preserve liberty? In his novel The Scarlet Letter, Nathaniel Hawthorne uses hypocrisy to prove the moral of the story, honesty, through his characters, symbols, and ironies. Arthur Dimmesdale is a man of contradictions. The populace of Boston looks upon him upon as a saint, and yet he hides a great sin in his heart. Dimmesdale is in a constant state of poor physical health and mental anguish because he knows he is guilty of adultery, yet he cannot admit to his transgression. He wears a self-inflicted scarlet letter comparable to Hester’s, and suffers, as does Hester; yet in his case he is the one ostracizing and torturing himself as opposed to Hester, who has become the town par...

Does Sex Sell

Whether they are on TV, radio, or in a magazine, there is no way that you can escape advertisements. They all have their target audience who they have specifically designed the ad for. This is a multi billion dollar industry and advertisers study many ways that they can attract people's attention. One way that is used the most and is in some ways very controversial is use of sex to sell products. Evan Williams, a company who sells whiskey, released a print ad of a young woman dressed in her Sunday best on one side of the advertisement saying â€Å"the longer you wait†. On the other side they have a picture of the same woman as an adult dressed in a sexual manner saying â€Å"the better it gets†. In the middle of the ad is a bottle of their whiskey and next to that it says â€Å"aged seven years†. An analysis of the Evan Williams advertisement will include the appeals of ethos, logos, and pathos. The target audience is both males and females in their late teens to mid twenties. This company gets the male side of the equation by getting their attention and interest drawn to the attractive woman on the right with bright colors, drawing your attention there, as well as the bottle of whiskey which is right in the middle of the page. One way to try and get the females to look at the advertisement and read it is by showing a very plain girl who seems to be very typical of girls during their younger years. On the side of that picture they show the same girl who now has become a woman, and is very attractive and just seems so much more powerful and sure of herself. One way that you can achieve that is to drink Evan Williams Kentucky straight bourbon whiskey. I feel that this advertisement is not very ethical at all. They send the message that if you do not wear sexy clothes and try and act sexy then you are not good enough. The logic behind the advertisement is almost in all essence, sexual. They are using a woman who is very attractive with bright colors standing next to a bottle of whiskey. As well, they try and use their slogan that goes with their product and apply it to a completely different situation with a woman. They show how much â€Å"better it gets† when it is aged seven years. This is very degrading to the woman because they portray her as being ugly in the first photo, but after seven years, less clothing, and makeup she is much better. There is nothing wrong with the girl on the left who is just plain and simple. When you have to wear something sexual to get noticed it just continues to drain away from the collective respectability of our society. They try to play sexual emotions in this advertisement. They show an attractive woman and a bottle of whiskey. They try and make it seem that if you drink their product that you can get this woman. Also they try and use the emotions of the females talking about how a decent looking woman can become very attractive. The newer picture also is more vibrant plus she is wearing a lot more sexually provocative clothing than her old self, who is covered up and not showing any skin. It also seems to draw onto girls that have a lower self esteem. Showing that you will become a much happier person if you are good looking and dressed very sexually, than if you are not better looking. Personally I think that this is an unethical dilemma that we face in society today. Using sex to sell products is something that companies should stay away from. Depicting images of people for personal gain is not right in my opinion. Unfortunately in our society this form of advertisement is accepted. This ad is although one that does appeal to its targets by using clever wording.