DATAMATH  CALCULATOR  MUSEUM

CONCEPT V distributed by Zayre Corp.

Date of introduction:  July 11, 1977 Display technology:  LED-stick
New price:  SRP $6.99 Display size:  8
Size:  5.4" x 3.0" x 1.1"
 110 x 63 x 24 mm3
   
Weight:  4.1 ounces, 75 grams Serial No:  B 94089
Batteries:  9V Date of manufacture:  
AC-Adapter:   Origin of manufacture:  Malaysia
Precision:  8 Integrated circuits:  TMS0972
Memories:  1     
Program steps:   Courtesy of:  Joerg Woerner

Zayre Corporation was founded in 1956 by Stanley and Sumner Feldberg in Hyannis, Massachusetts as a discount department store chain. Zayre launched already in August 1975 the CONCEPT series of portable electronic calculators with the introduction of their first CONCEPT 24.

The Zayre CONCEPT Calculator Series culminated in June 1976 with the introduction of the Texas Instruments CONCEPT I, CONCEPT II, and CONCEPT III calculators based on the TI-1200, TI-1250, resp. SR-16 II but disappeared already in August 1979 with the clearance sales of the CONCEPT COMPACT calculators.

The CONCEPT V calculator seems to be a Far East design of an unknown OEM (original equipment manufacturer). It was introduced in Summer 1977, just a few weeks before Zayre Corporation discontinued the CONCEPT calculator series.

Dismantling this CONCEPY V calculator reveals a very simple construction centered around the Texas Instrumnets TMS0972 single-chip calculator circuit introduced already in 1975 and a LED display from the same manufacturer. 


Fellow collectors - if you own a Zayre CONCEPT calculator,  please report us the serial number and date code from the back of the calculator for our Database.

horizontal rule

If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, February 5, 2010. No reprints without written permission.