The pattern of printed lines on most products are called ___________________?
		A. prices
B. OCR
C. scanners
D. barcodes 
		A. prices
B. OCR
C. scanners
D. barcodes 
		A. Volatile storage
B. Non- volatile storage 
C. Sequential storage
D. Direct storage
		A. handheld computer
B. mainframe computer 
C. personal computer
D. tablet computer
		A. the same thing as a programmer
B. a program which translates source program into object program 
C. key punch operator
D. a person who computes source programs
		A. ROM information can be easily updated
B. Data in ROM is non volatile, that is, it remains there even without electrical power 
C. ROM provides very large amounts of inexpensive data storage
D. ROM chips are easily swapped between different brands of computers
		A. Performs the primary storage function
B. Is the only chip cound in most PC models
C. Performs the arithmatic-logic and control functions 
D. Almost always operates on by-bits of data at a time
		A. CPU 
B. Monitor
C. CD-ROM
D. Floppy disk