| 1. | The MK-61 has 105 steps of volatile program memory and 15 memory registers.
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| 2. | It directed the exchange between memory registers and calculation registers, and operations in the registers.
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| 3. | Memory register is reduced from 9 to 1.
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| 4. | It also had a single user-accessible memory register.
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| 5. | Data could be stored in 110 memory register.
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| 6. | It also had ten user-accessible memory registers.
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| 7. | The "'FX-601P "'could store 128 fully merged steps and data could be stored in 11 memory register.
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| 8. | There is only 1 memory register.
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| 9. | It featured a single memory register and a limit of 36 program steps, along with a conditional jump instruction.
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| 10. | Usually, some memory registers ( triggering ports ) within common address space perform an assigned operation when the instruction references them.
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