Microprocessors & Microcontrollers

Keyboard/Display Controller – 8279

The Intel 8279 is a keyboard/display controller that interfaces keyboard and display devices with the microprocessor-based system. Through the use of this controller, processor utilization reduces in correspondence to time-consuming tasks such as keyboard scanning and display refreshing. Basically, it is a general-purpose controller that performs the function of driving the display unit as well …

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RISC Processor

RISC is an acronym for Reduced Instruction Set Computer. The RISC processor is a type of microprocessor that operates on small but very optimized instruction sets in order to perform various tasks. It is based on one instruction per cycle approach. RISC is considered to be an alternative to CISC (Complex Instruction Set Computer) which …

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Pentium Microprocessor

Pentium Microprocessor is one of the powerful family members of Intel’s Χ86 microprocessor. It is an advanced superscalar 32-bit microprocessor, introduced in the year 1993 that contains around 3.1 million transistors. It has a 64-bit data bus and a 32-bit address bus that offers 4 Gb of physical memory space. While the maximum clock rating …

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ARM Processors

In ARM Processors, ARM is an acronym used for Advanced RISC Machines as these are a family member of those CPUs which are based on RISC architecture. More simply, Advanced RISC machines have created the architecture of ARM processors thus called so. These processors offer architectural simplicity due to which it exists in small size, …

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RFID Technology

RFID Technology is an abbreviation used for Radio Frequency IDentification technology. RFID technology is a unique mode that offers automatic identification and tracking of objects or entities by making use of radio-frequency waves. This technology is known to be a combination of radio broadcast technology and radar. In the 1980s, it has gained immense popularity …

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8284 Clock Generator

8284 clock generator is an IC developed by Intel to provide clock frequency, ready and reset signal to the 8086/8088 microprocessor. It is an 18 pin chip. 8284 produces the clock signal, synchronizes it with the ready and reset signal and provides it to the microprocessor. Functions of 8284 It provides a stable clock to …

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Assembler Directives

Definition: Assembler directives are the instructions used by the assembler at the time of assembling a source program. More specifically, we can say, assembler directives are the commands or instructions that control the operation of the assembler. Assembler directives are the instructions provided to the assembler, not the processor as the processor has nothing to …

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Assembly Language Programming

Assembly language programming is a low-level programming language in which the instructions are written in the form of mnemonics. More simply, we can say the language in the form of mnemonics is known as assembly language. This programming language allows the creation of human-readable program equivalent to machine code. Now a question arises: What are …

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Semiconductor Memory

Definition: Semiconductor memory is the main memory element of a microcomputer-based system and is used to store program and data. The main memory elements are nothing but semiconductor devices that stores code and information permanently. The semiconductor memory is directly accessible by the microprocessor. And the access time of the data present in the primary …

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Instruction Set of 8086 Microprocessor

We know that instructions are the binary commands used for the execution of any operation. In the previous article, we have discussed the instruction set of the 8085 microprocessor. Here in this article, we will discuss the instruction set supported by the 8086 microprocessor. 8086 supports various instructions including those supported by 8085. However, 8086 …

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