Computer+Science

Here is a list of computer keyboard shortcuts. Note: On macintosh substitute ctrl with command

ctrl V - paste ctrl Z - undo ctrl X - cut ctrl Y - redo ctrl C - copy

In Microsoft Word ctrl G - go to ctrl F - find ctrl A - select all ctrl shift H - replace There are many more, but these come up a lot.

ROM - Read-Only Memory RAM - Random Access Memory CD-ROM - Compact Disc Read-Only Memory CPU -Central Processing Unit DOS - Disk Operating System DPI - Dots Per Inch PC - Personal Computer PCI - Peripheral Component Interchange PDF - Portable Document Format RISC - Reduced Instruction Set Computing RTF - Rich Text Format UPS - Uninterruptible Power Source WORM - Write Once-Read Many WYSIWYG - What You See Is What You Get (E.G. Microsoft Word) - my favorite acronym ever! YAFIYGI - You Asked For It You Got It (E.G. Notepad or TextEdit)
 * __These are some Computer Acronyms that you should know:__**

A gigabyte = 1024 megabytes. 1024 bytes = one kilobyte K = kilobyte Kb = kilobit MB = megabyte Mb = megabit MB/s = megabytes per second Mb/s = megabits per second bps = bits per second
 * __Units used in Computer Chips:__**

__**The Symbols above the Numbers on a Keyboard:**__
 * The Number that the Symbol is on: || The Symbol: ||
 * 1 || The "!" mark ||
 * 2 || The "@" sign ||
 * 3 || The "#" sign ||
 * 4 || The "$" sign ||
 * 5 || The "%" sign ||
 * 6 || The "^" sign ||
 * 7 || The "&" sign ||
 * 8 || The "*" sign ||
 * 9 || The "(" sign ||
 * 0 || The ")" sign ||


 * //__--Perry Lim__//**


 * //__(Edited by Charlie and Sam)__//**

Here's a list of what the F1-F12 keys do. -Sam Fansler

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F1 As a throwback to DOS days, you will find that the F1 key will often bring up a help menu. If you press F1 while working in a program, help for that program will usually appear. If you press F1 while at the Windows desktop or when the Windows Explorer is open, a Windows help screen will pop up. If you happen to be working in a program and would like to see the Windows help screen, simply press the Windows key (the key with the Windows logo on the bottom row of keys) on your keyboard and press F1 at the same time.

F2 You can use the F2 key to rename an item when working in Windows. Highlight any folder or file, and press F2. You will then be able to type a new name for the object. After you type the new name, just click outside the name box or press the enter key to make the name change. This works just like right-clicking a file or folder and selecting Rename.

F3 When you are working in Windows, the F3 key will open the Find Files window.

F4 The F4 key has some very useful functionality. You can press F4 to open the Address bar when working in Internet Explorer. This will allow you to type the address of a Web page for quick access.

You can also press the Alt key and the F4 key at the same time to close the open Window that you are currently working on.

F5 The F5 key is the refresh key. You can press F5 when viewing a Web page to make sure that you have the most current version of that Web page. You can also use F5 when in Windows to refresh the screen. This can be a handy shortcut. If perhaps you are viewing the contents of a floppy disk and you insert a new floppy, your screen will still show the contents of the first floppy. Just press F5 to refresh the screen and see the contents of the floppy you just inserted.

F6 This key is often used to move the cursor around the structure of the program. Pressing it will often cycle you from window to window.

F7 The F7 key does not have any functionality in Windows. It may, however be used in some individual programs. To find out if it is available in the program you are using, bring up the program’s help screen and type in the words function key.

F8 The F8 key can be used to access Safe Mode if pressed during the computer’s boot up process. This is a trouble-shooting mode which will start the computer with minimal drivers.

F9 The F9 key does not have any functionality in Windows. It may, however be used in some individual programs. To find out if it is available in the program you are using, bring up the program’s help screen and type in the words function key. F10 F10 is the key that is used to activate the menu bar in many programs. You can use F10 to highlight the first menu choice, and then use the arrow keys to move around the menus. Pressing the Shift key while pressing F10 will bring up the shortcut menu. This is similar to right-clicking on an object.

F11 Press F11 when you are working in Internet Explorer and the window will open to full screen mode. This will make all the toolbars disappear and can be useful to see more information on the screen. Press F11 when you are in full screen mode will toggle you back to your normal view.

F12 The F12 key does not have any functionality in Windows. It may, however be used in some individual programs. To find out if it is available in the program you are using, bring up the program’s help screen and type in the words function key.

Binary Code
Binary code is an encoding code used in the characters 0 and 1. It's used to write things in a way the computer can store it. For example, to right 64, I write 1000000 which translates to 2^6 and 2^6= 64.Here's how it works.Binary code is a base 2 encoding language. For example, if I write 10, the first digit,zero, translates to 2^0 which equals 1.The second digit translates into 2^1 which equals 2. So 1+2=3. So 10 equals 3.

Numbers 1-9 are the Same
Hexdecimal is almost the same as Binary but it is used with base 16 and uses numbers 1-9 and the letters A-F