Computer Software Components

computer software

A computer can’t do anything on its own without a software.

A software can be classified into:

• ROM BIOS
• Operating system
• Applications software

1. ROM BIOS Chip

It contains instructions that enable the computer to start-up or boot. ROM (Read Only Memory) BIOS(Basic Input Output System) and it is located on the motherboard.

2. Operating Systtem(OS)/System Software

It is a software that allows the user to operate the hardware and use applications software. It is a set of instruction codes that is used to:

• Define input & output devices and connections
• Provide instructions to the CPU
• Load program files to memory
• Maintain system security. …etc.

E.g.DOS(Disc Operating System), Windows (10, 11), Linux, Machintosh, Android ... etc.

3. Applications software

They are computer programs that help the user to perform a specific work by manipulating text, number and graphics or combination of them. E.g.Microsoft Office (Word, Excel, Access, PowerPoint), Autocad, Peachtree, Mavis, …etc.
NB. A computer can do NOTHING without an operating system. But it can do without application softwares.

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