The Intel 8255A is a general purpose programmable I/O device designed for use with Intel microprocessors.

The Intel 8255 (or i8255) Programmable Peripheral Interface (PPI) chip was developed and manufactured by Intel in the first half of the 1970s for the Intel 8080 microprocessor. The 8255 …

Explore the Intel 8255A Programmable Peripheral Interface, its features, modes of operation, and programming techniques for effective microprocessor communication.

Features of 8255A Programmable Peripheral Interface. 24 programmable I/O pins; Fully TTL compatible; High speed, no ‘Wait State’ operation with 5 MHz 8085, 8 MHz 80C86 and 80C88; …

The 8255A is a general purpose programmable I/O device designed for use'with 8080A and 8085A microprocessors. It has 24 I/O pins which 'may be individually programmed in two …

Apr 11, 2011 · The 8255A is a programmable peripheral interface (PPI) device designed for use in Intel microcomputer systems. Its function is that of a general purposes I/O component to …

Dec 7, 2021 · The 8255A is a general-purpose programmable l/O device designed for use with Intel microprocessors. It has 24 O pins which may be individually programmed in 2 groups of …

Jul 9, 2020 · 8255芯片是Intel公司生产的可编程 并行 I/O接口芯片，有3个8位并行I/O口。 具有3个通道3种工作方式的可编程并行接口芯片（40引脚）。 其各口功能可由软件选择，使用灵活， …

Mar 6, 2022 · Increasing digital Input/Output Pins of Arduino Uno using 8255A. Interfacing 8255A with 89c51 microcontroller and Blinking Leds.

The 8255A contains three 8-bit ports (A, B and C). All can be configured in a wide variety of functional characteristics by the system software but each has its own special features to …