A Calculator Language

• Buttons and display screen,

• Single memory cell,

• Conditional evaluation feature.

• Input Display

  • Press ON
  • Press ( 4 + 1 2 ) * 2
  • Press TOTAL (prints 32)
  • Press 1 + LASTANSWER
  • Press TOTAL (prints 33)
  • Press IF LASTANSWER + 1 , 0 , 2 + 4
  • Press TOTAL (prints 6)
  • Press OFF

• (See Schmidt, Figure 4.3)

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