Notebook
Pen based
Palm
Laptop
personal
pen based
palm
portable
Wheel calculator
Napier’s Bone
Calculator
Slide rule
Tape drive
Printer
Disk Drive
Processor
John Napier
Blaise Pascal
William Oughtred
Charles Babbage
Application
Compiler
Interpreter
System
Herman Hollerith
branching
placing
filling
bridging
Specific
Special
General
All
J.L. Baird
Thomson
Pascal