Folder with documents with detailed circuit diagrams, switching sequence details, and wiring diagrams relating to the Anita Mark 12 calculators.

The ANITA Mark 12, introduced in 1966, was a hybrid cold-cathode tube and transistor logic calculator with a 10-key keyboard, 12-digit "Nixie"-type tube display. It was the first Anita calculator with the now-standard ten-key keyboard.

Documents include:

• Anita Mark 12 'Leaf' Switches
• Anita Mark 12 'Rotor' and 'Leaf' Switch Reference Numbers
• Mark 12 Leaf Switches - Location on Key Board
• Anita Mark 12 Modifications List No. 2 (31st January 1967)
• Anita Mark 12 Modifications List No. 3 (30th June 1967)
• Anita Mk 12 Circuit Diagrams and Panel Component Assemblies numbers list
• Anita Mk12 Zero Only Display Register Circuit diagram
• Anita Mk12 Baseboard Circuit diagram
• Anita Mk12 Store Register Circuit diagram
• Anita Mk12 Display Register Circuit diagram
• Anita Mk12 Buffer Card Circuit diagram
• Anita Mk12 Skt. Chart
• Anita Mk12 Visual Decimal Point Circuit diagram
• Anita Mk12 Non-Display Register Circuit diagram
• Anita Mk12 Power Supplies 200-240v diagram
• Anita Mk12 Master Oscillator Panel Circuit
• Logic circuit diagrams
• Anita Mk12 Power Supplies panel diagram and component list
• Anita Mk12 Carry Store 1 Circuit diagram
• Anita Mk12 Register Timer Circuit diagram
• Anita Mk12 Keyboard Timer & Action Bistable circuit diagram
• Anita Mk12 Carry Store 2 & Write Amp. Circuit diagram
• Anita Mk12 Rear Panel Circuit diagram
• Anita Mk12 Solenoid Supply Circuit
• Anita Mk12 Solenoid Fire Panel
• Anita Mk12 Logic 'A' Circuit diagram
• Anita Mk12 Logic 'Q' Circuit diagram
• Anita Mk12 Logic 'R' Circuit diagram

Reference Number :

Date Published : 1966

Manufacturer : Bell

Platform : Anita