Hi everyone,
In this post I am giong to
talk about the first chapter that me and my classmates finished together. The name of the chapter is 'The Computer System'.
Data and information mean the same thing but in computer language they do not. If you have this number: 31101999, it can be a date (This is an example of data). If the same number is shown as 31/10/1999. One can recognise that this data now is a date and it becomes information.
A computer can accept data and make it into information. These are called
Input and Output.
Input is the process when you enter data into the computer. The most common device to enter data is the keyboard. Then the data is processed. Getting processed data out of the computer is the job of the output devicesfor eg. printer.
There are different types of computers.Here are some examples:
- Supercomputers - These are very powerful computers, big and are used for research
- Mainframe computers - These are less powerful copmuters but still big, are used in banks
- Desktop computers - Are small enough to fit on a desk. These are used in houses
- Portable computer - These are very small. Infact you can carry it where ever you want
These are some words that were metioned in the chapter:
- Hardware - Are things that can be seen or touched eg. keyboard.
- Software - Is an other word for programs
- Application Software - The software that people use to make a task eg. word processing
- System Software - The software that the computer uses to make its own activities
- Main Memory - Is were the data and instructions are kept
- CPU - Is the brain of the copmuter
- Bus - Is a roadway which data and commands travel
