Midterm Review
Introduction to Computers
1. What is a computer?
A computer is an electronic device, operating under the control of instructions stored in its own
memory
2. List five categories of hardware.
1) Input device, 2) Output device, 3) System Unit, 4) Storage device, 5) Communications device.
3. List advantages and disadvantages of using computers
Advantages: speed, reliability, consistency, storage, communications
Disadvantages: Health risks, Violations of privacy, Public Safety, Impact on labor force, impact
on environment.
4. What is green computing? What strategies are used to support green computing?
Green computing involves reducing the electricity consumed and environmental waste generated
when using a computer.
Strategies include:
Recycling
Regulating manufacturing processes
Extending the life of computers
Immediately donating or properly disposing of replaced computers
5. What is software? What are the two main categories of software?
Software, also called a program, tells the computer what tasks to perform and how to perform
them
1) System software
2) application software
6. List the categories of computer.
7 categories
Personal computer
Mobile computers and mobile device
Game counsels
Servers
Mainframes
Super computers
Embedded computers
7. List the elements of information system.