LIGHTPEN
It has a light sensor at its writing tip. It receives information from the screen and feeds it back into the computer memory
It has a light sensor at its writing tip. It receives information from the screen and feeds it back into the computer memory
(i) It is used to enter data into the computer. (ii) It is mainly used when playing games.
Scanners are of two types, which include: (i) a small and cheaper (hand held) one that is run over the image. (ii) One that looks like a photocopier in which you put the image that is to be scanned into the scanner, the same way you operate your photocopiers. USE: Both are used to input …
(i) It is like the remote control of your home TV (ii) It has about two buttons on the top and connects o your PC’S system unit. (iii) It moves a pointer on the screen as we move it on a pad near the computer. (iv) It is through such movement that commands are sent …
The original PC keyboard had 83 keys and later between 84 and 88 keys. The latest in keyboard design (standard keyboard is 10 1/102 keyboard that provides several additional features, extra function keys and a new keyboard layout. The standard keyboard has the letter in the order of QWERTY layout. Across the top of the …
The hardware is the physical components of the computer itself. Basically, they are things you can touch and see in a computer. They include the electronic components, mechanical arid electro mechanical devices. The major hardware components are: (i) Processor — the central processing units (CPU) where data is processed following an ordered sequence of instructions …