IA6453是一个字符叠加芯片，在监视器上显示日期、频道等信息，由单片机控制。

每一个字符由12*18点阵组成，包含10个阿拉伯数字，26个英文字母，片假名，平假名，少量汉字，符号共240种字符。另外可通过单片机控制，在内部RAM中加入用户需要的16种字符。-IA6453 is a character overlay chip, the monitor displays the date, channel and other information, controlled by the microcontroller. Each character is composed of 12* 18 dot matrix, contains 10 digits, 26 English letters, Katakana, Hiragana, a small amount of characters, symbols, a total of 240 characters. Also available through MCU control, the user needs to add the internal RAM of 16 characters.