Casio fx-7700GB Electronic Engineering

The TC4066BF is a quad bilateral switch manufactured by the Toshiba Corporation.

the HD62076A02 is a Microcomputer Unit by the Hitachi Corporation.

The HN62321BF is a 1-megabit (120-K × 8-bit) CMOS Mask ROM by the Hitachi Corporation.

The MN4464S is a 64-Kbyte SRAM by the Panasonic Corporation. On the board, there is another labelling for TC5565AFL, which is a 65536-bit SRAM by the Toshiba Corporation.

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