HOW A COMPUTER WORKS!
Inputs and Outputs
A drive is a thing that is capable of storing and reading information and it is not as easy remove unlike a disk.
A type of computer drive is a flash drive:
A USB flash drive, also known under a variety of other names, [a] is a data storage device that includes flash memory with an integrated Universal Serial Bus (USB) interface. USB flash drives are typically removable and rewritable, and physically much smaller than an optical disc.
Some other types of drives are a hard drive and a floppy disk.
A computer monitor is an electronic device that shows pictures. Monitors often look similar to televisions. The main difference between a monitor and a television is that a monitor does not have a television remote to change channels. Monitors often have higher display resolution than televisions.
Some types of monitor are LCD and a CRT monitor.
This is an example of a CRT monitor.
This is a labelled example!
The CPU (Central Processing Unit) is the part of a computer system that is commonly referred to as the "brains. The CPU is responsible for executing a sequence of stored instructions called a program.
This program will take inputs from an input device, process the input in some way and output the results to an output device.
CPUs aren’t only found in desktop or laptop computers, many electronic devices now rely on them for their operation. Mobile phones, DVD players and washing machines are examples of equipment that have a CPU
RAM or ROM
RAM (Random Access Memory) and ROM (Read Only Memory) are types of computer memory that provide users with access to information stored on a computer.
Main store (or computer memory)is divided into Read Only Memory (ROM) and Random Access Memory (RAM).
ROM is memory that cannot be changed by a program or user. ROM retains its memory even after the computer is turned off. For example, ROM stores the instructions for the computer to start up when it is turned on again.
RAM is a fast temporary type of memory in which programs, applications and data are stored. Here are some examples of what's stored in RAM:
the operating system
hical user interface (GUI)
On left is a ram and on the right is a rom.
A touch screen is the only device which works as both as an input and an output. You view the options available to you on the screen(output) and then you use your finger to chose the option you have chosen (input).
Touch screens are easy to use and are found in public places such as cashpoints (ATM), ticket collection terminals, at the theatre or airport, and at museums.
Touch screens are not commonly used to input large amounts of data because they are not very accurate and they would be tiring to the hands to use for long periods of time.