1890 Herman Hollerith's punched cards and machines are used for the US
Census.
Tabulating Machine Company
later became IBM
1943 IBM / Harvard build the Mark I Automatic Sequence Controlled
Calculator
It was 8ft tall x 51ft long x
35 tons w/500 miles of wire and 2 million connections]
1944 Mark I, IBM's first large scale calculating computer.
1946 IBM 603 Multiplier
1946 First all electronic computer ENIAC is built
[Electronic Numerator,
Integrator, Analyzer, and Computer]
1948 IBM 604 Calculator with "pluggable tube unit"
1952 IBM 701
1954 IBM 650 2k 10 digit word memory on Drum
195X Remington Rand builds it's Univac
195X IBM 605, 607, 705 vacuum tube computers
1956 IBM 305 RAMAC
1956 SAGE
1957 IBM 608
1958 Bell introduces the MODEM [110 baud]
1959 Xerox introduces plain paper copier
1959 IBM 609 Transistorized Calculator with CORE memory
196X IBM 1410, 7010, 7040, 7044, 7070, 7074, 7090 & 7094
Transistorized Computers
1961 First time-sharing system goes into operation at MIT
1961 IBM starts shipping 1401 Computer systems by the thousands
[11.5usec transistor
& core memory]
1961 2030 Stretch
1961 IBM Selectric Typewriter
1962 SABER Airline Reservations System
1965 IBM shipped System 360's [First Microprogram based systems]
Models
2020,2022,2025,2030,2040,2050,2065,2075,2085,2091
Five modified 50's made
up each of the 9020's (Later upgraded with 2065's)
[used until recently by
FAA for Air Traffic Control]
1969 Pentagon funds the development of Arpanet
[to connect military and
university computers] (long before Algore had a clue)
1970 IBM System 370's 3125, 3135, 3145, 3155, 3165
1970 8" Floppy disks were used to load Microprograms into mainframe
computers
1971 Intel develops first micro processor chip the 4004
1974 Intel unveils the 8080 microprocessor
1975 The ALTAIR DIY 8080 microcomputer kit ships 5000 units (S-100 Bus)
1976 IMSAI is second with 8080 kit microcomputer (I built one of these)
1976 5-1/4" Floppy disks [180K bytes] added to 8080 systems
1977 North * Horizon Kit Micro w/Z-80 processor 5-1/4 360k floppy runs
CP/M Operating system
1977 The Apple II hits class rooms.
1980 Intel 8086 microprocessor
1980 Bill Gates/Microsoft buys CP/M, upgrades and licenses it to IBM as
DOS.
1981 IBM introduces the IBM PC w-8086 [open architecture for everyone to
copy or "clone"]
1983 3-1/2" Floppy disks [720 K bytes]
198x 3-1/2" Floppy disks [1200 K bytes]
1984 4-3/4" CD-ROM
1984 Apple bobs' up the "Mac"intosh [secret closed architecture
which nobody cloned]
198X Intel 80286 microprocessor
198X Intel 80386 microprocessor
1989 CERN Institute launches the WorldWideWeb
199X Intel 80486 microprocessor
1993 Intel Pentium microprocessor
199X Bill Gates becomes richest guy in world
1995 Windows 95
1998 Windows 98
2001 Happily Slick & Slimy Willie will be back in AR but not before
having
Paula Jones, Vince Foster, Newt Gingrich &
all the working taxpayers at once.
2004 Bill G. will probably own the world
Processor cycle/sec or clock speeds
195x to 2003 10khz to 2+ ghz
Computer Storage devices
(semi-permanent except for IBM cards, Paper tape and CD-ROM)
Punched Cards 3-1/4" x 7-3/8"
IBM = 80 cols or characters [1890 to about 1990]
Remington Rand = 45 cols (45 alfa- 90 numeric)[193_ to apx 1965]
Paper Tape [teletype]
Drum 20k to 10m (1954 - 196x)
Disks
Fixed Hard 36" x 50 1956
Fixed Hard down to 1-1/2" 1960 to present)
Removable Hard 12" x 6 (1962)
Removable Hard 12" x 21 (1966)
Removable Floppy (8", 5-1/4", 3-1/2") (1970 to present)
CRAM Rectangular pieces (3-1/4" x 7-3/8") of oxide coated film
dropped, blown and sucked onto a drum and read and
written and then 'crammed' back into a removable
container. This process regularly destroyed them.
Magnetic Tape 1/2" or 1" 200BPI to 3200+BPI (195x to present)
CD-ROM = Compact Disk Read Only Memory
Memory
RAM=Random Access Memory
ROM=Read Only Memory
WOM=Write only Memory [just checking to see if your are reading]
PROM=Programmable Read Only Memory
Printers
Line (30 to 1400LPM)
Bar (Multiple Vertical) - 194x to 100 LPM
Wheel (Multiple Vertical) - 1950 to 150 LPM
Wire (Multiple Vertical) - 195x to 300 LPM
Drum - 196x to 1000 LPM
Bar (Single Horizontal) - 1963 to 300 LPM
Chain (Horizontal) - 1961 to 600 LPM
Train (Horizontal) - 1965 to 1400 LPM
Character
Pencil - 1565 to 1990
Wire matrix - 196_ to current
Inkjet - 198_ to current
Page
Lazer - 198_ to current