DATAMATH CALCULATOR MUSEUM |

Toshiba BC-1011

Date of introduction: | 1971 | Display technology: | Fluorescent |

New price: | ¥115.000 (US$ 370) | Display size: | 10 |

Size: | 10.2" x 7.2" x 3.5" | ||

Weight: | 4 pounds 9 ounces | Serial No: | 452830 |

Batteries: | n.a. | Date of manufacture: | mth 12 year 1970 |

AC-Adapter: | 220V | Origin of manufacture: | Japan |

Precision: | 14 | Integrated circuits: | Toshiba T3019, T3026, 20*SSI-IC's |

Memories: | 1 | ||

Program steps: | Courtesy of: | Joerg Woerner |

If we trace the timeline of electronic calculating devices we will notice the introduction of transistor based calculators in 1964 and a quick integration of these transistors into integrated circuits within some years.

This Toshiba BC-1011 is a hybride using two different technologies:

The first use of LSI-IC's (Large-Scale-Integration Chips) manufactured by Toshiba. | |

The last use of SSI-IC's (Large-Scale-Integration Chips) in a elctronic calculator. |

Dismantling the BC-1011 reveals three different printed circuit boards (PCB's):

The predecessor Toshiba BC-1212 was introduces in 1970 and gives comparable specifications. It lacks the LSI-IC's (Large-Scale-Integration Chips) and uses instead 38 of the SSI- and MSI-IC's.

The BC-0802 introduced soon after
the BC-1011 makes already use of a single-chip calculator circuit.

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

© Joerg Woerner, March 6, 2004. No reprints without written permission.