This document provides a brief history of important computers throughout time, beginning with early programmable machines like the Z3 and ENIAC, and progressing to mass-produced computers like the IBM 650. It then discusses the first computers used for scientific calculations like SEAC and the PDP-1, influential mainstream systems like the IBM System 360 and 370, the Altair 8800 that ignited the microcomputer revolution, and early home computers. The summary concludes with powerful modern computers like the PowerMac, Alienware, MacBook Air, and iMac and a note about using technology wisely.

2. What is a Computer?
A device that processes input and
generates output.

3. The Complex
Number
Calculator
Considered to be
the first
demonstration of
remote access
computing.
Zeus Z3
First programmable
computing machine.
ENIAC
The first general-purpose
computer.

4. SEAC
IBM 650
The first computer to use
all-diode logic.
The world’s first massproduced computer
Pilot ACE
Perform floating point arithmetic
necessary for scientific
calculations.

5. Data General Nova
A computer that can do simple
computing tasks that was
widely used in science
laboratories.
PDP-1
Famous for being the computer
most important in the creation
of hacker culture.
IBM System 360
The first family of computers
designed to cover the complete
range of applications, from small
to large, both commercial and
scientific.

6. IBM System 370
The first to use Virtual Memory and
utilized memory chips instead of
magnetic core technology.
ASCII
A character-encoding scheme originally
based on the English alphabet that
encodes 128 specified characters.
Altair 8800
Ignited the microcomputer revolution.

7. VIC 20
An 8-bit home computer that has
video games capability.
TRS-80 Color Computer
one of the earliest of the first
generation of home
computers marketed for
home use in English-speaking
markets.
Macintosh SE
Apple manufactures personal
computers.

8. Macintosh IIfx
A specialized high-speed (80
ns) RAM using 64-pin dualported SIMMs.
Amiga 3000
Features improved
processing speed,
improved rendering of
graphics, and a new
revision of the operating
system.
PowerMac
The first personal
supercomputers, reaching speeds
of 4 to 20 Gigaflops.

9. Alienware
A high-speed computer built for gaming.
Boasts intense graphics for ultimate gaming
experience.
MacBook Air
A laptop designed for optimum
performance and portability.
iMac
The slimmest version of known desktop to
date that gives full speed performance
and vivid graphics.

10. A fast changing invention that
can either change the life of
people for the good or for the
bad.
Use it wisely and responsibly.