| 摘要 |
PURPOSE:To easily calculate a complex number without using any complicate procedure by providing a real number key and an imaginary number key, and providing only the real number key with a transfer indicating function. CONSTITUTION:When complex numbers A+jB and C+jD are multiplied by each other, A is set in a register and a microorder is generated by a ROM with a key RP to set a C-FF and also perform transfer operation of X X and X Y, thereby storing both X and Y. Then when B is set, transfer B X is performed and X is substituted with B. When a multiplication key is pressed, an FF for multiplication is set and a decision on the state of the C-FF is made; when the FF is set, transfer operations of X M1 and Y M2 are performed. Then, C and D are set similarly. When an equal key is hit lastly, a microorder for complex number multiplication is generated successively by the ROM and an arithmetic circuit FA calculates AC-BD and AD'+BC to obtain AC-BD and AD+BC in the registers X and Y. Then, a real part is obtained on a display part and an imaginary part is obtained through exchange key operation. |
