Western Auto electronic Wizard aka M4995

Date of introduction:  1973 Display technology:  LED-stick w/o lens
New price:  $34.95 Display size:  8
Size:  5.7" x 3.1" x 1.6"
 146 x 79 x 41 mm3
Weight:  5.6 ounces, 159 grams Serial No:  0004916
Batteries:  4*AA  Date of manufacture:  wk 18 year 1974
AC-Adapter:  AC9160 Origin of manufacture:  USA
Precision:   Integrated circuits:  TMS0128
Program steps:   Courtesy of:  Joerg Woerner

This close relative of the Montgomery Ward P8P a.k.a. TXI-8645A was sold as electronic Wizard from the distributing company Western Auto. Don't be confused with the electronic Wizard M4993 based on the exactra 23, the elecronic Wizard M4986 based on the TI-1200 or the elecronic Wizard M4987 based on the TI-1250, this one is named M4995.

Dismantling the M4995 reveals a printed circuit board (PCB) 100% identical with the Montgomery Ward P8P despite the missing switch next to the [%] key.

The TMS0128 located in this rare electronic Wizard introduced in Fall 1973 traces back to the TMS0102 "calculator-on-a-chip" announced two years earlier by Texas Instruments. We know the TMS0128 already from the Canon LE-82


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If you have additions to the above article please email:

Joerg Woerner, February 2, 2012. No reprints without written permission.