8253 Programmable Interval Timer: 8253 Programmable Interval Timer - In the process control system or automation industry, a number of operations are generally performed sequenÂtially. Between two operations, a fixed time delay is specified. In…
8255A Programmable Peripheral Interface: 8255 is a programmable peripheral interface IC and is a multiport input/output device. This is a general-purpose programmable I/O device, which may be used with many different microprocessors. There are 24…
8259A Programmable Interrupt Controller: 8259A Programmable Interrupt Controller - Microprocessor-based system design requires many I/O devices such as keyboards, displays, sensors and other components. These devices should receive servicing in an efficient manner from the…
80387 Numeric Data co-processor: The 80387 numeric data co-processor is an advanced version of 80287 and it is a high performance numeric data processor and it is specifically designed to operate with 80386 CPU. The…
Pin diagram of 80287 co-processor: The pin diagram of 80287 co-processor is shown in Fig. 7.53 and the function of pins are given below: D15-D0 The D15-D0 is used as a 16-bit data bus which…
80287 Numeric Data Processor: The 80287 Numeric Data Processor is an advanced version of its predecessor, the 8087, and it is specially designed to operate with the processor 80286. The 80287 provides about 70 additional…
Data Types and Instruction Set of 8087 co-processor: The Data Types and Instruction Set of 8087 co-processor can support 7 different data types namely Three Signed Integers 16-bit (word) - range 32768 to + 32767…
Pin Diagram of 8087 Processor: Figure 7.46 shows the pin diagram of 8087 processor. The operations of all pins of 8087 are explained below: AD15-AD0Â The AD15-AD0Â are the time multiplexed address/data lines. During T1, these lines…
8087 Numeric Data Processor: The 8087 Numeric Data Processor (NDP) is called a high-speed math co-processor. This math co-processor is also known as Numeric Processor Extension (NPX) or Numeric Data Processor (NDP) or Floating Unit…
8288 Bus Controller: Figure 5.37 shows the 8288 bus controller which is used in the maximum-mode operation of 8086 CPU. This IC receives four inputs such as SÌ…2, SÌ…1, SÌ…0Â status signals and CLK from 8086.…
