|Anita 1000 LSI|
The image on the right is an Anita 1000 LSI desktop calculator. Clicking on it provides access to the simulator. It is a basic four function calculator and lacks a memory (available in the 1011 LSI mode). It works in a reverse-polish manner. I.e. key in a number, press 'Enter 1st No', key in a second number and press one of the four function keys.
The 'LSI' range of calculators were Sumlock Anita's foray into large scale integrated circuits (from General Instruments Microelectronics). The units were smaller and more stylish than the previous transistor based models, though the displays still used 'nixie' tubes. The Anita 1000 LSI dates from around 1971.
A 'readme' file for the simulator is available here, and Anita 1000 LSI instructions can be found at Nigel Tout's Anita site here.
The handheld calculator range dates from about 1973. By now, Sumlock Anita was using single chip solutions from Rockwell, which, along with the LED displays, made these small units possible.
The images below provide access to the Anita 811/810 calculator simulator. The Anita 811 also has three other 'skins' to choose from, showing variants made for the German company Triumph-Adler.
The Anita 811 (like the Anita 810 before it) behaves like a desktop calculator, where the "+" key is prime, and the "=" key is for multiply and divide. So, for instance to add 3 and 5 the sequence is "3+5+". Subtraction is similar: 3 minus 5 is "3+5-". To multiply and add, for example 2 times 4 plus 6, the sequence would be "2*4=+6+". Try this out for yourself on one of the calculators (click on an image).
|Anita 810||Anita 811||Adler 81 #1||Adler 81 #2||Triumph 81|
A 'readme' file for the 811 simulator (and variants) is available here. The manual has been scanned in and uploaded to the manuals page.
A manual for the 831 can be found on Nigel Tout's site here. Access the model's 'readme' file can be obtained by clicking here.
A manual for the 841 can be found on Nigel Tout's site here. Access to the simulator's 'readme' file can be obtained by clicking here.
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