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Microprocessor Chips

Brand: Chinese Model: CH423A
I2C to GPIO IO expander breakout board, you can use it for applications like remote IO expander, digital potentiometer, segment display driver etcBased on low cost chip CH423. You can replace with similar chips like PCF23017, PCF8574, etc8 Bidirectional IO  ports IO0-IO716 Output-only..
Brand: UGE Electronics Model: PCF8574T-SMD
The PCF8574 IO Expansion Board is used as remote 8-bit I/O expander for I2C-bus. Up to 8 PCF8574, IO Expansion Board can be connected to the I2C-bus, providing up to 64 I/O ports. Features:Working voltage: 2.5-6VInterface: IIC8-bit parallel port..
Model: 82C55
Programmable Peripheral Interface (82C55)The 82C55 is a popular interfacing component, that can interface any TTL-compatible I/O device to the microprocessor. It is used to interface to the keyboard and a parallel printer port in PCs (usually as part of an integrated chipset). Requires insertion..
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