Western Auto electronic Wizard aka M4987

Date of introduction:  1976 Display technology:  LED-stick
New price:   Display size:  8
Size:  5.5" x 2.8" x 1.4"    
Weight:  5.5 ounces Serial No:  1024699
Batteries:  9V  Date of manufacture:  wk 15 year 1977
AC-Adapter:  AC9180 Origin of manufacture:  USA
Precision:  8 Integrated circuits:  TMC0972
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

This close relative of the TI-1250 followed the "electronic Wizard" introduced in 1975. Main difference is the changed nameplate and the confusing part number:

M4987_5_Label.jpg (44037 Byte)Citation(R) CALCULATOR BY TEXAS INSTRUMENTS  66-4987-5
We noticed that part number already with the TI-1025 based Citation introduced in 1977.

The only difference to the TI-1250 are the wooden foil over the keyplate and the missing TI logo.

With the M4986 a similar calculator without memory but different nameplates was sold.

If you have additions to the above article please email:

Joerg Woerner, June 14, 2003. No reprints without written permission.