UNIT 4 KING

key

A computer keyboard is one of the primary input devices used with a computer that looks similar to those found on electric typewriters, but with some additional keys. The modern keyboard is based on the typewriter, a typing device that was first developed and patented in 1868 by Christopher Sholes.

keyboard

A computer keyboard is one of the primary input devices used with a computer that looks similar to those found on electric typewriters, but with some additional keys. The modern keyboard is based on the typewriter, a typing device that was first developed and patented in 1868 by Christopher Sholes.

document

A document or document file is a description of an electronic copy or hard copy of reference material for a product. To write and create an electronic document on a computer use a word processor or other text editor. Once a document has been created it can be made a hard copy by using a printer to print that document.

shift keys

A keyboard key that allows a user to type a single capital letter. For example, pressing and holding the Shift key while pressing the letter a key would generate a capital A. On US keyboards the Shift key is the second largest key located on both the left and right-hand of the keyboard, below the Caps lock key, and Enter or Return key. The picture is an example of the Shift key.

letter keys

A letter is any character that is not considered a number or symbol. For example, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, and z are all lowercase letters in the English language and letter keys on the keyboard. In the image to the right is an example of the uppercase letter

space bar

A long horizontal key on the lower edge of a keyboard that is always the largest key on the keyboard. When the spacebar key is pressed it creates an empty space, also known as a space character that helps separate words and other characters in a sentences. In the below keyboard picture, is an example of the spacebar.

gwam

Alternatively referred to as GWPM, which is short for Gross Words Per Minute, GWAM is short for Gross Words A Minute and is similar to WPM except it does not account for any errors. GWAM is the overall typing speed regardless of how many errors you make. GWAM is often used as a measurement for users who are just learning to type and is later replaced by WPM.

enter

Alternatively referred to as a return key, when referring to a keyboard, the enter key is used to send the cursor to the next line or execute a command or operation. It is common for most standard keyboards to have two enter or return keys: one above the right Shift key and another on the bottom right of the numeric keypad.

arrow keys

Alternatively referred to as cursor keys, the arrow keys are usually located in between the standard section and the numeric pad on computer keyboards. It is made up of four keys: the left arrow (back arrow), up arrow, down arrow, and the right arrow (forward arrow). The picture is an example of what the arrow keys may look like on your keyboard. Some keyboards, such as the Microsoft Natural Keyboard, may arrange these keys differently.

editing

Alternatively referred to as edit, edit mode is a feature within software that allows the modification of files. A good example of a program with edit mode is MS-DOS Editor. Most programs with edit mode toggle between "view" and "edit." When in the "view mode" the user can only look at the file; however, in "edit mode" the user can view and change the file's contents. Often, these modes are utilized for files that are shared between multiple users on a network.

center

Alternatively referred to as middle or centre, the center refers to a position that is horizontally or vertically aligned with an object, as the middle of the screen or line in a paragraph. In computing, the term "center" is generally used to describe text that is horizontally in the middle of a line. However, the term "middle" may be used to describe text that is in the middle of a page both horizontally and vertically. The following example shows text that has been centered horizontally.

qwerty keypad

Alternatively referred to as the Sholes keyboard, the QWERTY keyboard was invented by Christopher Sholes, who was issued a patent for a typewriter on July 14, 1868. The QWERTY keyboard is named after the first five letter keys located under the row of number keys on the keyboard and is the official computer keyboard standard (ISO 9995). Today, the QWERTY keyboard is the most commonly found and used computer keyboard in the United States. Below is an image of the keyboard keys layout on the QWERTY keyboard. QWERTY keyboard key layout

numeric keypad

Alternatively referred to as the number pad, numeric keyboard, or numpad, the numeric keypad is a 17-key keypad usually found on the far right side of a typical IBM 101 / 2-key keyboard. To enable and disable the numeric keypad press the num lock key. Below is a visual example of the Saitek keyboard and where the keypad is located on almost every computer keyboard.

error

An error is a term used to describe any issue that arises unexpectedly that cause a computer to not function properly. Computers can encounter either software errors or hardware errors.

function key

As you can see in the picture of the Saitek Gamers' keyboard below, the function keys are lined along the top of the keyboard; labeled F1 through F12. These keys act as shortcuts, performing certain functions like saving files or printing data.

proofreading

Checking for spelling, grammar, and general readability issues is often called proofreading. It is important to proofread professional documents, letters, articles to catch errors before they're published. Some companies even employ people specifically for proofreading.

caps lock

Computer keyboard toggle key that enables or disables all the letters from being typed in uppercase. When the caps lock key is enabled, the keyboard types "LIKE THIS" and when it is disabled, the keyboard types "like this." The picture shows an example of the keyboard LED's that indicate if keyboard toggle keys are enabled or disabled. In this example, the num lock key is currently the only enabled key, indicated by the blue LED. When caps lock is enabled the caps lock indicator will illuminate.

default

In general, a default is what the computer, operating system, or program has set for the user based off what it believes is the best option. If the user wants a different setting, the default can be changed to a user setting. Below are some different examples of how default is used with computers.

delete key

In general, delete or remove refers to the act of eliminating a file, text, or other object from the computer hard drive or other media. Files deleted in Microsoft Windows are sent to the Recycling Bin; on Apple computers, they're sent to the Trash. In most operating systems, when files are deleted they are only marked as such, but will still exist on the hard drive until they are overwritten by other data. This condition is what makes data recovery possible.

esc key

Short for Escape, Esc is a key located on the top-left of a computer keyboard that allows a user to cancel or abort operations

word wrap

Sometimes referred to as a run around, word wrap is a feature in text editors and word processors that moves to the next line when reaching the end without requiring you to press enter. For example, in the picture below you can see as each section is shrunk the sentence is wrapped, so it does not extend past the border. You can see a live example of how text wraps by resizing the browser window on this page.

backspace key

Sometimes referred to as the rubout key, the Backspace key or Back space key is a keyboard key that deletes any character before the cursors current position. For example, click the mouse button at the end of the below text and press backspace to delete the last character in the line.

home row keys

Term used to describe the row of keys on the computer keyboard your fingers rest on when not typing. For example, on the standard QWERTY United States keyboard, the home row keys for your left hand are A, S, D, and F and your right hand are J, K, l, and ; with the thumbs resting on the space bar.

tab

Usually about five spaces wide, a tab is an indentation at the beginning of a line of text to signify a new paragraph in a document or to help create equal spacing between multiple lines. When formatting marks are visible, tabs are represented by an arrow, as shown in the example picture to the right.

return

When referring to programming, return may refer to a return address or return statement.

cursor

When referring to the mouse, cursor is used to describe the object used to point, click, drag, and drop items on a GUI operating system. See the mouse pointer definition for additional information about this type of cursor.

accuracy

degree of freedom from errors

rate

speed of doing a task

technique

speed of doing a task