CU- Control Unit
ALU- Arithmetic and logic unit
MU- Memory Unit
MSDOS- Micro Soft Disk Operating System
I- Input Output
BMP- Bitmap Picture
Sys - System
Com - Command
RAM - Random Access Memory
ROM - Read Only Memory
PROM- Programmable Read Only Memory
EPROM- Erasable Programmable ROM
EEPROM- Electrically Erasable Programmable
XT- Extra Technology
AT - Advance Technology
PS-2- Personal System – 2
PC- Personal Computer
NDD- Norton Disk Doctor
CPAV- Central Point Anti-Virus
DM- Disk Manager
MSAV - Micro Soft Anti-Virus
MS- Micro Soft
OS – Operating System
IBM- International Business machine
