Calculator

Abstract

Abstract PURPOSE: To reduce the number of the figure register and the digit of the memory address register by installing the key to supply the hexadecimal data and the memory which receives an address designation through operation of the key. CONSTITUTION: Key A to supply the hexadecimal data is provided along with memory B whose address is designated by operation of key A. The data to be stored are supplied in sequence to register R from key input device. With operation of key A ,the control signal is produced, and the key signal is set to register R via the gate. Then the store memory key is supplied to store the data of the register into the specified memory, so the control signal is produced to set the flip-flop. After this, the address of memory B to store the contents of register R is set up with two digits of the register to carry out storage. In the case of recall, the recall memory key is supplied. Thus, the control signal is produced from the key input device to set the flip- flop. Then the register two digits set up the address of B to be recalled, and the recall is carried out COPYRIGHT: (C)1979,JPO&Japio

Inventors

• 👤 Akihiro Yamataka
• 👤 Tsunenori Soma
• 👤 Tadao Kusumoto
• 👤 Shigemitsu Tazaki

Bibliographic Details