SIMD, MISD & MIMD Multiple Processor Architectures

Introduction

Parallel processing, in which applications are partitioned into multiple tasks that are executed concurrently by multiple processors is used for high-throughput needs where even the single fastest computer cannot be good enough.

Multiple processor system architectures differ widely in … Read More

How to Interface LCD Display to a Microcontroller

LCD crystal displays allow a better user interface compared with LED displays as it is much easier to display text messages in LCD displays. They also consume much less power than LED displays. Nonetheless, LED displays have better intensity than … Read More

Computer Memory Organization

A computer system uses memory elements for storing program instructions, data, and other information. From the perspective of the instruction set, a memory is an array of words, each identified by a unique address that indicates its location within the … Read More

Basic Microprocessor Instructions

Microprocessors perform various basic operations that include data transfer instructions, arithmetic instructions, logic instructions, control transfer instructions and machine control operations. This set of commands (instructions set) used to control the functions of a microprocessor is specific to a given … Read More

Interfacing LEDs & Electromechanical Relays to Microcontrollers

In this article, we briefly describe how to interface LEDs and electromechanical relays to microcontrollers. Note, a detailed description on how this is done can be found in the official documentation of the microcontroller you are working with. Here, we … Read More

The Intel 8085 Microprocessor

The 8085 Microprocessor is one of the most popular microprocessors. In this article we look at some of the basic features and pin-out configuration of this microprocessor.

The block diagram of the 8085 microprocessor is shown below:

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Device Programmers for PIC Microcontrollers

Once the program is written and translated into executable code, the resulting HEX file is loaded to the target microcontroller’s program memory with the aid of a device programmer. The type of device programmer depends on the type microcontroller to … Read More

4 Types of Processor Architectures

Processor architecture can be classified as one of the following four architectures:

  • Accumulator-based processor architecture
  • Register-based processor architecture
  • Stack-based processor architecture
  • Pipeline processor architecture

Accumulator-Based Processor Architecture

Accumulator-based processor architecture
Figure 1.1 Accumulator-based processor architecture

In the accumulator-based processor architecture, illustrated above, instructions … Read More

How Special Function Registers (SFRs) are Mapped into Memory Space

There are two basic primary architectures used for mapping special function registers into memory space. In the first type of arrangement, I/O space and memory space are separated as illustrated in Figure 1.0. The I/O devices have a separate address … Read More