WANs
PCs
Mainframe computers
Minicomputers
ALU
REM
ROM
RAM
FAX
EDT
DDP
DTP
9
16
18
27
Central Board
System Board
Computer Board
Mouse
Infinite loop
Feedback loop
Data highway
Data traffic pattern
Inkjet printers
Daisy wheel printers
Line printers
Dot matrix printers
Touch pad
Laser beam
Printer
Scanner
Secondary storage
CPU
Data input
RAM chip
Information
Data
Software
Hardware