8085 Microprocessor

/8085 Microprocessor

Intel 8255A – Programmable Peripheral Interface Pin Diagram

By |2019-02-24T00:40:07+00:00February 24th, 2019|8085 Microprocessor|

Intel 8255A - Programmable Peripheral Interface Pin Diagram shown in the figure below Intel 8255A - Programmable Peripheral Interface Pin Diagram Now let's discuss the function description of the pins in the 8255A. Bus It is a tri-state 8-bit buffer that connects the microprocessor to the system data bus. Data is transferred or received from [...]

Intel 8255A – Programmable Peripheral Interface

By |2019-02-23T23:56:20+00:00February 23rd, 2019|8051 Projects, 8085 Microprocessor|

The Intel 8255 (or i8255/onkyo tx 8255) Programmable Peripheral Interface (PPI) chip was developed and manufactured by Intel for the Intel 8080 microprocessor in the early 1970's. The 8255A is a programmable universal I / O device that allows the transfer of I / O data to an I / O interrupt when needed. It [...]

Level Converter MAX232

By |2017-05-22T12:47:46+00:00April 19th, 2017|8051 Projects, 8085 Microprocessor, Articles, AVR Microcontroller, AVR Programming, Electronics|

Level converter MAX232 is very essential when we are interfacing the digital hardware (controller) to the computer via serial mode. The computer serial port use RS 232 protocol and controller works on the TTL logic. These two hardware need to synchronize with each other for the proper communications. To solve this problem MAX [...]

History of microprocessor

By |2017-02-13T08:48:28+00:00February 13th, 2017|8085 Microprocessor|

History of microprocessor Contributor: Suryansh Gupta The first Microprocessor (4004) was designed by Intel in 1968. A Japanese Calculator manufacturer, BUSICOM approached Intel with a design for a small calculator which needs 12 custom chips.  Ted Hoff, an Intel Engineer thought that a general purpose logic device could replace the multiple components. This idea [...]

8085 Pin Diagram

By |2017-02-17T15:13:06+00:00February 10th, 2015|8085 Microprocessor|

8085 –Microprocessor Pin diagram 8085 is a microprocessor having 40 pins and works on single power supply categories of signals are written as follows: Power supply Clock Signals Interrupt Signal Address and data bus Control signal Status signal Serial i/o port DMA(Direct Memory Access) Request signal Other externally initiated signal Description of pins: 1. Powersupply: [...]

8085 Addressing modes with example and Instruction Size

By |2018-11-29T23:24:04+00:00February 10th, 2015|8085 Microprocessor|

ADDRESSING MODES The various ways of specifying data (or operands) for instructions are called as addressing modes. The 8085 addressing modes are classified into following types: Immediate addressing mode Direct addressing mode Register addressing mode Register indirect addressing mode Implicit addressing mode (i) Immediate Addressing mode In this mode operand is a part of the [...]

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