INTRODUCTION TO COMPUTERS
EXAMINATION TEST COMPLETE
QUESTIONS AND SOLUTIONS
●● software
Answer: A program or instructions that give directions to the computer.
Software is essential to a computer because, without software, a
computer can do nothing.
●● programmer
Answer: A person who develops computer software programs. A
programmer, or software developer, is a person with the training and
skills necessary to design, create, and test computer programs.
●● hardware
Answer: The physical devices that a computer is made of are referred to
as the computer's hardware. Most computer systems are made of similar
hardware devices.
The central processing unit (CPU)
Main memory
Secondary storage devices
Input devices
Output devices
, ●● CPU
Answer: Central Processing Unit. The central processing unit, or CPU, is
the part of a computer that actually runs programs. (The CPU is often
referred to as the processor.) The CPU is the most important component
in a computer because without it, the computer could not run software.
●● ENIAC (Electronic Numerical Integrator and Computer)
Answer: The ENIAC, considered by many to be the world's first
programmable electronic computer, was built in 1945 to calculate
artillery ballistic tables for the U.S. Army. This machine, which was
primarily one big CPU, was 8 feet tall, 100 feet long, and weighed 30
tons.
●● microprocessor chip
Answer: Small piece of silicon that holds millions of tiny electronic
circuits; serve as CPU of most computers; can be programmed to
perform certain tasks
●● Main Memory (RAM)
Answer: Main memory is commonly known as random-access memory
or RAM. It is called this because the CPU is able to quickly access data
stored at any random location in RAM. RAM is usually a volatile type
of memory that is used only for temporary storage while a program is
running. RAM is erased when the computer is turned off.
EXAMINATION TEST COMPLETE
QUESTIONS AND SOLUTIONS
●● software
Answer: A program or instructions that give directions to the computer.
Software is essential to a computer because, without software, a
computer can do nothing.
●● programmer
Answer: A person who develops computer software programs. A
programmer, or software developer, is a person with the training and
skills necessary to design, create, and test computer programs.
●● hardware
Answer: The physical devices that a computer is made of are referred to
as the computer's hardware. Most computer systems are made of similar
hardware devices.
The central processing unit (CPU)
Main memory
Secondary storage devices
Input devices
Output devices
, ●● CPU
Answer: Central Processing Unit. The central processing unit, or CPU, is
the part of a computer that actually runs programs. (The CPU is often
referred to as the processor.) The CPU is the most important component
in a computer because without it, the computer could not run software.
●● ENIAC (Electronic Numerical Integrator and Computer)
Answer: The ENIAC, considered by many to be the world's first
programmable electronic computer, was built in 1945 to calculate
artillery ballistic tables for the U.S. Army. This machine, which was
primarily one big CPU, was 8 feet tall, 100 feet long, and weighed 30
tons.
●● microprocessor chip
Answer: Small piece of silicon that holds millions of tiny electronic
circuits; serve as CPU of most computers; can be programmed to
perform certain tasks
●● Main Memory (RAM)
Answer: Main memory is commonly known as random-access memory
or RAM. It is called this because the CPU is able to quickly access data
stored at any random location in RAM. RAM is usually a volatile type
of memory that is used only for temporary storage while a program is
running. RAM is erased when the computer is turned off.
