Canon Canola L100A

Date of introduction:  1971 Display technology:  Panaplex
New price:   Display size:  12
Size:  8.0" x 6.5" x 2.6"     
Weight:  2 pounds 15 ounces Serial No:  300657
Batteries:  n.a. Date of manufacture:  year 1971
AC-Adapter:  220V Origin of manufacture:  Japan
Precision:  10  Integrated circuits:  TMC1824, TMC1825 
Program steps:   Courtesy of:  Joerg Woerner

The Canon Canola L100A preceded the first desktop calculator manufactured by Texas Instruments - the TI-3000 - about one year. The external design of both is very similar, the differences are internal. 

L100A_PCB.jpg (112965 Byte)Instead of the later
single-chip calculator electronics found in the TI-3000 and its sibbling TI-3500 the L100A uses two chips. The display module is very similar to the later Panaplex™ manufactured by Burroughs found in the TI desktop calculators. The high-voltage drivers needed in this design reside in the black modules (6248 for the digits and 6249 for the segments) between the calculating circuits and the display.

L100A_IC.jpg (39350 Byte)In Texas Instrument's history of calculator chips the L100A plays an important role. If you remember the four LSI-circuits of the L100
you will find in the L100A only two chips of a later generation but one step in front of the single-chip calculator chip. The same chip set was used with the wonderful early pocket calculator LE-10 introduced in the same time frame.

Please compare the quick evolution of the calculator technolgy:

Type Year Digits Chip set
L100 1971 10 TMC1737, TMC1753, TMC1754, TMC1807 
L100A 1971 10 TMS1824, TMS1825
L100S 1972 10 TMS0106 single chip
L121F 1972 12 TMS0201, TMS0302

The next desktop calculator in Canon's line was the L800 sporting the TMS0105 single-chip calculator chip and the somewhat larger L100S using the TMS0106 single-chip calculator chip.

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© Joerg Woerner, December 5, 2001. No reprints without written permission.