Computer System Examples? Input Output Devices System Unit Devices slide 1 Computer System Input Devices Output Devices System Unit Examples? Storage Devices

slide 2 Primary Input Devices Keyboard Mouse

slide 3 Uses Of Keyboard Enter Data Alphabets Numbers Issue Commands

slide 4 Keyboards

Parts of Keyboard Status Indicators Numeric Keypad Cursor Control Keys slide 5 Parts of Keyboard Status Indicators Numeric Keypad Cursor Control Keys Standard Keyboard

Standard Keyboard Standard keyboards of different brands look alike. slide 6 Standard Keyboard Standard keyboards of different brands look alike.

slide 7 Standard Keyboard Alphabetic Keys are arranged like those on a typewriter.

slide 8 Standard Keyboard Numeric Keys (Number Row)

slide 9 Standard Keyboard

Standard Keyboard Tab Caps Lock Advances cursor to the next tab stop slide 10 Standard Keyboard Tab Advances cursor to the next tab stop Capitalise all the alphabets typed Not produce the top symbol on keys that contain two symbols, eg, number row Caps Lock

Standard Keyboard Shift slide 11 Standard Keyboard Hold down the Shift Key to capitalise the alphabets typed Produce the top symbol on keys that contain two symbols Shift

slide 12 Standard Keyboard Backspace Key deletes one character to the left of the cursor.

Standard Keyboard Enter Key slide 13 Standard Keyboard Enter Key Advances the insertion point to the next line Used to execute a command

slide 14 Standard Keyboard

Standard Keyboard Ctrl Alt slide 15 Standard Keyboard Ctrl Alt Used in conjunction with another key to expand the functionality of the keyboard Depends on the software being used

slide 16 Standard Keyboard

Standard Keyboard Esc Function Keys Cancels an operation slide 17 Standard Keyboard Esc Cancels an operation Function Keys Are numbered and assigned different functions in different software packages Can save keystrokes

Numeric Keypad Numbers can be keyed in by use of slide 18 Numeric Keypad Numbers can be keyed in by use of Numeric Row of Standard Keyboard Numeric Keypad

slide 19 Numeric Keypad Permits rapid numeric data entry

Numeric Keypad If a key has two symbols, it serves two functions: slide 20 Numeric Keypad If a key has two symbols, it serves two functions: (1) numeric key (2) cursor control key Switch between 2 functions by use of Num Lock key

slide 21 Numeric Keypad When Num Lock is pressed, the numeric keypad is in numeric mode and produces numbers. Num Lock light is on.

slide 22 Numeric Keypad When Num Lock is pressed again, the numeric keypad turns to cursor control mode and moves the cursor in the direction indicated by the arrows. Num Lock light is off.

Toggle Keys Switches back and forth between two modes slide 23 Toggle Keys Switches back and forth between two modes Num Lock, Cap Lock and Scroll Lock

slide 24 Toggle Keys - Cap Lock Switches between uppercase mode and lowercase mode When Cap Lock is pressed, user toggles into uppercase mode. When Cap Lock is pressed again, user toggles back into lowercase mode.

Toggle Keys - Scroll Lock slide 25 Toggle Keys - Scroll Lock The function of the Scroll Lock key depends on the software being used. It is rarely used with today’s software.

slide 26 Status Indicators Status Indicators show the status of each toggle key: Num Lock, Caps Lock and Scroll Lock.

slide 27 Status Indicators Scroll Lock Num Lock Caps Lock

slide 28 Cursor Control Keys (2) (1)

Cursor Control Keys 2 sets of Cursor Control Keys: slide 29 Cursor Control Keys 2 sets of Cursor Control Keys: (1) Located between Standard Keyboard and Numeric Keypad (2) When the Numeric Keypad is in cursor control mode

slide 30 Cursor Control Keys Arrow Keys

Cursor Control Keys Arrow Keys Delete Key Select options from a menu slide 31 Cursor Control Keys Arrow Keys Select options from a menu Move cursor up, down, left and right Delete Key Deletes the character at the cursor position

Cursor Control Keys Insert Key A toggle key slide 32 Cursor Control Keys Insert Key A toggle key Switches between insert mode and typeover mode Insert mode allows additional text to be inserted. Typeover mode makes the new text type over the existing text.

Cursor Control Keys Home Key End Key slide 33 Home Key Moves cursor to the beginning of a line or the beginning of a document, depending on the software being used. End Key Moves cursor to the end of the line or the end of a document, depending on the software being used.

Cursor Control Keys Page Up Key Page Down Key slide 34 Cursor Control Keys Page Up Key Displays the previous screen of information Page Down Key Displays the next screen of information

slide 35 Other Keys

Other Keys Print Screen Key Pause Key slide 36 Other Keys Print Screen Key Prints what is currently being displayed on the screen Pause Key Temporarily suspend the current task

Keyboard Provides three basic ways for issuing commands: slide 37 Keyboard Provides three basic ways for issuing commands: (1) Key in the command using the alphanumeric portion of the keyboard (2) Tap a function key (3) Use the arrow keys to select a menu option from the displayed menu

slide 38 Keyboard Skills In order to use the keyboard efficiently, users are encouraged to develop their Keyboard Skills.