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What is a computer?
A computer is an electronic machine which can accept data in a certain form, process the data, and give the results of the processing in a specified format.
What does a computer system consist of?
A computer system consists of two parts: hardware and software.
What are three basic hardware sections?
the central processing unit (CPU), main memory and peripherals
What does the CPU stand for?
the central processing unit
What are the main functions of the CPU?
to execute program instructions and coordinate the activities of all the other units
What are peripherals?
the physical units attached to the computer
What do peripherals include?
storage devices and input/ output devices
What types of computer do you know? (name 5)
Desktop PC, laptops, mainframe, tablet PC, smartphones
What are the main parts of the CPU?
The control unit, the arithmetic logic unit, the registers
What does ALU stand for?
he arithmetic logic unit
What does ALU do?
it performs mathematical calculations (+, -, etc.) and logical operations (AND, OR, NOT)
What is the function of the system clock?
It sends out signals at fixed intervals to measure and synchronize the flow of data.
What term is used to refer to the main printed circuit board?
the motherboard
What type of memory is volatile?
RAM (random access memory)
What type of memory is non-volatile?
ROM (read only memory)
What is a bus and bus width?
Electrical channel that allows devices inside the computer to communicate with each other. The size of a bus, called bus width.
