DATAMATH  CALCULATOR  MUSEUM

Western Auto electronic Wizard aka M4993

Date of introduction:  1974 Display technology:  LED-stick w/o lens
New price:  $34.95 Display size:  8
Size:  5.1" x 2.8" x 1.3"    
Weight:  7 ounces Serial No:  02870
Batteries:  3*AA  Date of manufacture:  wk 36 year 1974
AC-Adapter:  AC9160 Origin of manufacture:  USA
Precision:   Integrated circuits:  TMS0803
Memories:      
Program steps:   Courtesy of:  Joerg Woerner

M4993_LAB.jpg (7398 Byte)This close relative of the Exactra 23 was sold as electronic Wizard from the distributing company Western Auto. Don't be confused with the elecronic Wizard M4986 based on the TI-1200 or elecronic Wizard M4987 based on the TI-1250, this one is named M4993.

M4993_1.jpg (21271 Byte)The only differences to the Exactra 23 are the display frame, and the faceplate for the keys. 

M4993_PCB.jpg (82532 Byte)M4993_DISP.jpg (36640 Byte)Dismantling the M4993 reveals a printed circuit board (PCB) 100% identical with the Exactra 23 but to our surprise the display construction looks very unfamiliar to us. We couldn't identify the manufacturer of this board.

The manual provided with this calculators stets: TXI 4993A47, distributed by Western Auto Supply Co.

Don't miss the rare Montgomery Ward TXI-8661A based on the Exactra 23 calculator.

 

 



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

© Joerg Woerner, March 5, 2006. No reprints without written permission.