1.3

What systems use a Central Processing Unit (CPU) and memory?

All types of computers

How does a user receive information from a computer?

Data is shown or displayed to the user through an output device.

Why do computers save or write data to a storage device?

Data running on system memory is only preserved while the computer is powered up.

What three elements are required for a computer to perform useful tasks?

Hardware, software, and the computer user

How is computer data defined?

Information shared in an IT system using nothing more complicated than the binary digits 1 and 0

What is the difference between hardware and software?

Software refers to a collection of data or computer instructions that tell the computer how to work. Hardware is the set of physical components that make up the system and perform the work.

When a computer writes data to memory and manipulates that data, the computer is said to be doing what?

The computer is using the CPU to act on instructions from the operating system and application software.

What are peripheral devices?

The parts of a computer system that are not contained within the case

What purpose do peripheral devices usually perform?

They allow information to be entered as input or received as output.

How does a computer receive data entered by a user?

Through the use of peripheral devices, such as mice and keyboards