COMPUTER APPRECIATION

Computer is defined in so many ways by so many based on their field of specialization. A computer is a set of interrelated and interactive devices, which uses electronic component to perform a predefined operations with accuracy. But generally, a computer system may simply be defined as an electronic device, which is capable of accepting data as input, process the data, store the data and provide the result as output in human readable form. The four basic parts of a computer are monitor, keyboard, mouse and system unit.

Computer has three component parts which are interdependent. That is, without this part combining together, it is incomplete. They are the key board, central processing unit also known as the system unit and the monitor or display unit.

COMPONENT PART OF THE COMPUTER

Keyboard: This is an output device use for sending/inputting data or information into the computer. It is very similar to the typing keys of the typewriter. It is divided into different areas as follows:

Typing keys: it is also known as typewriter keys. This is the alphabetical area (A – Z) used or alphabetical data

Numeric keys: it is use for inputting numbers.

Functional keys: these are series of keys (F1 – F12) that have their usage depending on a particular application.

Cursor keys: these are keys that aid the movement of the cursor; they include arrow keys, page up, page down, home, end, delete and insert.

Modify keys: this includes Ctrl, Alt, Shift; they depend on other keys to carry out their functions.

Indicator area: keyboard also has a status indicator area. This areahas three lights that display status (on or off). They are Num Lock, Scroll Lock, Caps Lock. These three keys toggle their respective mode on or off when they are pressed.

Num Lock: Toggles the key of the numeric keypad between cursor movement and numeric entry.

Caps Lock: Toggles the letter keys between lower case and upper case.

Scroll lock: Toggles between two ways of using the cursor keys... Continues in the next post, you can drop comments or questions below.

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