Computer Continuum

Owner(s): Eric Reiter

301 16th Ave, San Francisco, CA 94118

A prolific life-long inventor and amateur scientist, Eric Reiter started Computer Continuum in 1981, after dropping out of San Francisco State University. One of his first products was an analog interface board that made a digital oscilloscope with Fast Fourier Transform spectral analysis.

Computer Continuum products were used by:

Texas Tech, University of Oregon, Stevens Institute of Technology, Georgetown University, Henderson State University, San Francisco State University, Perdue, and more.
Northrop Corp, Harman-Motive, Argonne National Laboratories, Questor Corp, Gulf Oil Communications, Veterans Administration Center Medical Research Office, etc.

Products

Name	Description	Computers
Analog Interface Board Computer Continuum	8 channels each of A/D and D/A. Up to 200K samples per second, 1.6 microsecond A/D conversion time, 100ns acquisition window. 1 microsecond D/A time, 8 bits, 0-5V or 0-2.5V full scales. Board allows rearrangement of the pins and other features for easy interfacing to many types of host computers, including Sinclair, Apple, TRS80, others.	Sinclair ZX81, Timex/Sinclair 1000, Timex/Sinclair 1500
Buffered Bus Expansion Board Computer Continuum	This motherboard provides four 44-pin card connectors, room for wire wrap and voltage regulator. Eight chips are needed, five for buffers and three for decoding bi-directional data bus buffers. Budget Robotics & Computing purchased the rights to make and sell the Computer Continuum board in 1984.	Sinclair ZX80, Sinclair ZX81
Business/File Management Program Computer Continuum	Electronic file cabinet with sorting, editing and printer format commands. Ideal for mailing lists.	Timex/Sinclair 1000
Dual Trace 'Scope' Computer Continuum	155,000 samples per second with trigger and cursor.	Timex/Sinclair 1000
EPROM Board Computer Continuum	Board containing ‘SCOPE‘ and ‘FFT‘ programs on four 2716 EPROMs in 8-16K memory space, on the Hunter board.	Timex/Sinclair 1000
Frequency Analysis 'FFT' Computer Continuum	Fast Fourier Transform on EPROM in 4K of Z80 code. 256 points of magnitude and phase data calculated in one second. Can be used as a subroutine with the ‘SCOPE‘ to display frequencies up to 75khz.	Timex/Sinclair 1000
High Resolution Printer Program Computer Continuum	Graphics, data acquisition, averaging and scaling routines with optional graticule. Can be used with analog interface board.	Timex/Sinclair 1000
Ribbon cable connector Computer Continuum	Extends ZX bus to prevent RAM pack wobble.	Timex/Sinclair 1000
UHF Modulator Computer Continuum	Replaces the VHF (ch 2-3) modulator on the ZX81 circuit board. UHF is less sensitive to the interference radiated from the computer or its peripherals.	Timex/Sinclair 1000

Books

Periodicals

Documents

Downloads

Articles

Title	Description	Computers
A Door-Opening Board	Product announcement for Computer Continuum’s high-speed analog interface board for the Timex-Sinclair 1000. Works with other Z-80 computers but plugs directly into the TS1000.	Timex/Sinclair 1000
Hardware Review: Buffered Buss/Development Board "Expansion Board"	Computer Continuum’s buffered expansion board kit is a buffered backplane, providing four 44-pin edge card connectors with the same pinout as Sinclair’s except the slot.	Timex/Sinclair 1000
New Products and Services (Syntax v4 n1)	New products from KSOFT, D. Lipinksi, ZX Software Team, M.C. Hoffman, Run-it Software Club, Startext, Expense Cutters Products, Computa-Dek, Bytesize Computer Products, Computer Continuum, Martin Irons, Rose Aircraft. Charles Durang will not publish ZX Newsletter, focus on books instead.
Sinclair/Timex Analog Interface	Product announcement for Computer Continuum’s A/D and D/A interface.	Timex/Sinclair 1000

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People

Eric Reiter