![](https://coimages.sciencemuseumgroup.org.uk/132/138/large_thumbnail_cd0642_031_110125_rmg_1995_45_1_microcomputer.jpg)
Half adder from Type 555 Hollerith Electronic Calculator
- Made:
- 1957 in United Kingdom
![Half adder from Type 555 Hollerith Electronic Calculator](https://coimages.sciencemuseumgroup.org.uk/467/285/small_thumbnail_smg00225030.jpg)
![Half adder from Type 555 Hollerith Electronic Calculator](https://coimages.sciencemuseumgroup.org.uk/249/36/small_thumbnail_2016_0463__0001_.jpg)
![Half adder from Type 555 Hollerith Electronic Calculator](https://coimages.sciencemuseumgroup.org.uk/249/37/small_thumbnail_2016_0463__0002_.jpg)
Half adder from Type 555 Hollerith Electronic Calculator, by The British Tabulating Machine Co. Ltd., United Kingdom, c. 1957
Details
- Category:
- Computing & Data Processing
- Object Number:
- 2016-463
- Materials:
- ceramic (unspecified), glass, metal (unknown), rubber (unidentified) and textile
- type:
- calculator
- credit:
- Gift of Jack Sanders