A CIRCUIT WHICH CONTROLS WORD DISPLAY IN LCD

摘要

The circuit selectively displays the normal and reversal text characters on a dot-matrix liquid crystal display. The circuit comprises a counter means consisting of an address register (1) and an address counter (2), a scan counter (3) for sequentially counting the address of a RAM, a multiplexer (4) for providing the values of the scan counter and the address counter to the RAM according to the read/write signals, a RAM (5) for storing ROM codes, a control means for providing normal or reversal signal to a ROM (7) storing the characters, and a line counter (6).