Computer System
Computer Hardware
Computer Software
Storage Unit
The Bus System
The Central Processing Unit (CPU)
Input/Output Unit
Application Software
The Arithmetic and Logic Unit (ALU)
Registers
Control Unit
Secondary Storage
Direct (Random) Access Media
Sequential Access Media
Punched Paper Tape
Magnetic Tapes
Punched Cards
Floppy Disk/ Diskette
Hard Disk
Magnetic Disks
External Bus
Address Bus
Data Bus
Internal Bus
Control Bus
System Software
Operating System
Language/Programming Software
Multi User Operating System
Real Time Operating System
Single Tasking Operating Systems
Assembly Language
High-Level Language
Machine Language
Spread Sheet
Database Management
Word Processing
Memory Address Register (MAR)
Memory Buffer Register
Accumulator (ACC)
Instruction Register (IR)
Program Counter (PC)
Primary Storage
Read Only Memory (ROM)
Masked ROM
Flash ROM/Flash BIOs/Flash memory
Electrically Erasable Programmable ROM (EEPROM)
Erasable Programmable ROM (EPROM)
Programmable ROM (PROM)/One-Time Programmable Device (OTP)
Random Access Memory (RAM)
Static RAM (SRAM)
Dynamic RAM (DRAM)
Input Device
Output Unit
Soft Copy Output Devices
Visual Displays/Monitors/Video Display Terminal (VDT)
Flat-Panel Displays
Cathode Ray Tube (CRT)
Hard Copy Output Devices
Microfilm
Printers
Non Impact Printers
Ink Jet Printers
Laser Printers
Impact Printers
Dot Matrix Printer
Drum Printers
Daisy Wheel Printers
Plotters
Data Register (DR)