The system unit of a personal computer typically contains all of the following except:

A. microprocessor

B. disk controller

C. serial interface

D. modem

E. All of the above are contained

Answer: Option D

Solution(By Examveda Team)

A modem is a device or program that enables a computer to transmit data over, for example, telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves.