QUESTIONS GRADED A+
◉ Control Structure. Answer: one or more programming language
statements that control the flow of a computer program. Examples:
If/Else structure or a loop structure.
◉ Computer. Answer: a machine that processes information under the
control of a program.
◉ Program. Answer: sequence of instructions that control the computer.
To run, it must be loaded into the computer's memory where the CPU
executes it one instruction at a time.
◉ Hardware. Answer: the computer's electronic and mechanical
components.
◉ Software. Answer: the programs that control computers
◉ General purpose computer. Answer: a computer that can run many
different programs (e.g. a smartphone).
, ◉ Special purpose computer. Answer: a computer that has a fixed
program ( e.g. a calculator, a watch, a car's brakes)
◉ Memory. Answer: physical device used to store information for use in
a computer or other digital electronic device( e.g. disk drive, flash drive)
◉ RAM. Answer: Random Access Memory- also called main memory
stores the computer's programs and data temporarily while power is on.
◉ CPU. Answer: Central Processing Unit is the hardware that carries out
the instructions of a computer program. It is made up of 3 main parts:
the control unit (CU), the arithmetic and register. The CU processes the
program's instructions, the ALU (arithmetic logic unit) performs the
arithmetic and logic operations and the register stores intermediate data
during program execution.
◉ Input devices. Answer: bring data and programs into the computer
(e.g. mouse, keyboard)
◉ Output devices. Answer: transmit data to other computers to users
(e.g. printer, monitor, speaker)
◉ Motherboard. Answer: houses the computer's main electronic
components