Toshiba BC-0811B

Date of introduction:  1973 Display technology:  Fluorescent
New price:   Display size:  8
Size:  6.9" x 4.0" x 1.6"
 175 x 102 x 40 mm3
Weight:  9.8 ounces, 270 grams Serial No:  M50482
Batteries:  5*AA Date of manufacture:  wk 45 year 1973
AC-Adapter:  BH-101 (115V) or
 BH-103 (220V)
Origin of manufacture:  Japan
Precision:  8 Integrated circuits:  Rockwell R15330PB 
Memories:  1    
Program steps:   Courtesy of:  Peter Muckermann († April 21, 2021)

This Toshiba BC-0811B combined the keyboard technology of the BC-0808B with the housing of the BC-0804B and started the era of basic calculators with a fully independent memory.

BC-0811B_PCB.jpg (73438 Byte)The BC-0811B seems to be one of the first portable calculators with an integrated memory, Texas Instruments followed in 1974 with the TI-2550. Inside the BC-0811B we discovered a Rockwell R15330PB calculator circuit manufactured in October, 1973.

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Joerg Woerner, February 21, 2004. No reprints without written permission.