1. Nomograph relating Computer in use, Birth date & Age (2002), Age at 1st use.
Note two distinct groups of enthusiasts based on the machines each first used and identify with:
Mainframe and mini users and pioneers that were introduced to machines in college & work.
Personal computing starting in late 70s with use beginning early in the home and high school… a vastly larger number of user and use.
, Web, and messenger may form a 3rd?
Generation (birth)
Millenial
Modern first use
X (precocious very early user)
www PC
Mini
Mainframe
Prototypes
MAC, IBM PC, Sun
Altair, Apple II, Pet, TRS, VAX,
Baby B.
PDP8, 360, 6600
7090, CDC birth
Manchester
ENIAC
cgb
Age at
1st use
Computer
Introduction
Year
Silent
GI/Great
©Gordon Bell
27 Sept. 2002
Age
Birth date

2.
Millenial X
www PC
Mini
Mainframe
Prototypes
MAC, IBM PC
Pet, Apple II
Baby B.
PDP8, 360, 6600
7090, CDC
Manchester
Age at
1st use
Silent
Computer
Introduction
Year
GI/Great
Age
Birth date