Machines › Calculators › Sumlock › ANITA
ANITA
1961
The Sumlock ANITA, the 1961 desktop machine and the first fully electronic calculator, running on cold cathode and vacuum tubes.
ANITA Online Emulator
Play ANITA using JavaScript directly in your browser.
Controls
Boots the ANITA Mk VIII showing its Nixie tube display at 0. Key a number on the full keyboard (or type 0-9), then press + − × ÷ and = — the accumulator is shown on the glowing tubes. Multiply and divide run by repeated addition and subtraction, the way the real cold-cathode tubes did. Use the on-screen keypad (or the physical keys: 0-9 digits, + − * / operators, = or Enter total, C clear entry, Esc clear all). The demo configurations key a full sum in for you (123 + 456 = 579). Open the debugger to single-step the operation tape, set a breakpoint on an op, or watch the accumulator for writes.
Boots the ANITA Mk VIII showing its Nixie tube display at 0. Key a number on the full keyboard (or type 0-9), then press + − × ÷ and = — the accumulator is shown on the glowing tubes. Multiply and divide run by repeated addition and subtraction, the way the real cold-cathode tubes did. Use the on-screen keypad (or the physical keys: 0-9 digits, + − * / operators, = or Enter total, C clear entry, Esc clear all). The demo configurations key a full sum in for you (123 + 456 = 579). Open the debugger to single-step the operation tape, set a breakpoint on an op, or watch the accumulator for writes.
Boots the ANITA Mk VIII showing its Nixie tube display at 0. Key a number on the full keyboard (or type 0-9), then press + − × ÷ and = — the accumulator is shown on the glowing tubes. Multiply and divide run by repeated addition and subtraction, the way the real cold-cathode tubes did. Use the on-screen keypad (or the physical keys: 0-9 digits, + − * / operators, = or Enter total, C clear entry, Esc clear all). The demo configurations key a full sum in for you (123 + 456 = 579). Open the debugger to single-step the operation tape, set a breakpoint on an op, or watch the accumulator for writes.
Boots the ANITA Mk VIII showing its Nixie tube display at 0. Key a number on the full keyboard (or type 0-9), then press + − × ÷ and = — the accumulator is shown on the glowing tubes. Multiply and divide run by repeated addition and subtraction, the way the real cold-cathode tubes did. Use the on-screen keypad (or the physical keys: 0-9 digits, + − * / operators, = or Enter total, C clear entry, Esc clear all). The demo configurations key a full sum in for you (123 + 456 = 579). Open the debugger to single-step the operation tape, set a breakpoint on an op, or watch the accumulator for writes.
Boots the ANITA Mk VIII showing its Nixie tube display at 0. Key a number on the full keyboard (or type 0-9), then press + − × ÷ and = — the accumulator is shown on the glowing tubes. Multiply and divide run by repeated addition and subtraction, the way the real cold-cathode tubes did. Use the on-screen keypad (or the physical keys: 0-9 digits, + − * / operators, = or Enter total, C clear entry, Esc clear all). The demo configurations key a full sum in for you (123 + 456 = 579). Open the debugger to single-step the operation tape, set a breakpoint on an op, or watch the accumulator for writes.
Configurations
| Configuration | Emulator | Machine | OS | Legal | |
|---|---|---|---|---|---|
| ANITA 1011 (full keyboard) | ANITA | ANITA | open | Open ⛶ | |
| Add (123 + 456 = 579) | ANITA | ANITA | open | Open ⛶ | |
| Subtract (900 − 321 = 579) | ANITA | ANITA | open | Open ⛶ | |
| Multiply (123 × 9 = 1107) | ANITA | ANITA | open | Open ⛶ | |
| Divide (575 ÷ 5 = 115) | ANITA | ANITA | open | Open ⛶ |
Emulators
| Emulator | Type | License | Site |
|---|---|---|---|
| ANITA | online | Public domain | Website ↗ |