Image:Early Personal Computers.jpg

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[edit] Summary

Description

A collection of early personal computers exhibited at the Computer History Museum in Mountain View, California.

Top Shelf:

  • SCELBI 8B designed Nat Wadsworth and Bob Findley. This Intel 8008 based computer kit was first offered for sale with a small advertisement in the March 1974 issue of QST, an amateur radio magazine.
  • Processor Technology SOL-20 designed by Robert M. Marsh and Lee Felsenstein. The Intel 8080 based SOL-20 was featured on the cover of the July 1976 issues of Popular Electronics.

Second Shelf:

  • MITS Altair 8800 designed by Ed Roberts and Bill Yates. This Intel 8080 based computer was featured on the cover of the January 1975 issue of Popular Electronics.
  • SWTPC 6800 Computer designed by Gary Kay of Southwest Technical Products Corporation. The computer was first advertised in the November 1975 issues of Byte and Popular Electronics.
  • EA Educ-8 Microcomputer was designed by Jim Rowe and published as series of articles in Electronics Australia from August 1974 to August 1975. The computer is built from 100 TTL integrated circuits and does not use a microprocessor.

Third Shelf:

  • COSMAC ELF was designed by Joseph Weisbecker and uses the RCA 1802 CMOS microprocessor. This project was featured on the cover of the August 1976 issue of Popular Electronics.
  • TV Typewriter was designed by Don Lancaster. This early video terminal would display 16 lines of 32 uppercase characters on an ordinary television. This project was featured on the cover of the September 1973 issue of Radio-Electronics.
  • A homebrew computer using an Intel 8008 microprocessor. The computer was designed by Steve Roberts in 1974.

Bottom:

  • System 1, no description available at this time.
  • System 2, no description available at this time.

Far Right

  • Apple I computer designed by Steve Wozniak. Demonstrated in April 1976 at the Homebrew Computer Club and when on sale in July 1976 at the Byte Shop in Mountain View, California.

Photo by Michael Holley, November 2007, Canon Powershot A630 with existing light.
Source

self-made
Date

November 4, 2007
Author

Swtpc6800 en:User:Swtpc6800 Michael Holley
Permission
(Reusing this image)

see below

[edit] Licensing

Public domain I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

In case this is not legally possible:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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current02:58, 29 January 2008992×1,124 (334 KB)Swtpc6800 ({{Information |Description= A collection of early personal computers exhibited at the Computer History Museum in Mountain View, California. Photo by Michael Holley, November 2007, Canon Powershot A630 with existing light. |Source=self-made |Date=Novemb)
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Metadata

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Camera manufacturer Canon
Camera model Canon PowerShot A630
Exposure time 1/15 sec (0.066666666666667)
F-number f/2.8
Date and time of data generation 12:21, 4 November 2007
Lens focal length 7.3 mm
Width 1983
Height 2248
Compression scheme 5
Pixel composition RGB
Image title A collection of early personal computers exhibited at the Computer History Museum in Mountain View, California.

Photo taken November 4, 2007 with existing light. Canon Powershot A630.

Orientation Normal
Number of components 3
Horizontal resolution 150 dpi
Vertical resolution 150 dpi
Data arrangement chunky format
Software used Adobe Photoshop Elements 5.0 Windows
File change date and time 18:54, 28 January 2008
Author Photo by Michael Holley
Exif version 2.2
Date and time of digitizing 12:21, 4 November 2007
Image compression mode 3
Shutter speed 3.90625
Aperture 2.96875
Exposure bias 0
Maximum land aperture 2.96875
Metering mode Pattern
Flash 16
Color space sRGB
Focal plane X resolution 11412.587412587
Focal plane Y resolution 11439.252336449
Focal plane resolution unit inches
Sensing method One-chip color area sensor
Custom image processing Normal process
Exposure mode Auto exposure
White balance Manual white balance
Digital zoom ratio 1
Scene capture type Standard