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Introduction To Microcomputer Applicationseagleaustin

MicroComputer Application I - Introduction. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators. INTRODUCTION 3 Figure 1.2: ATmega16 board superposed on the Z80 board. Figure 1.3: Pinouts of the Z80 processor (left) and the ATmega16 controller (right). PC0-PC7, PD0-PD7, which can be used for different functions. For example, PD0 and PD1 can be used as the receive and transmit lines of the built-in serial interface. MicroComputer Application I - Introduction. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators.


A microprocessor is a programmable electronics chip that has computing and decision making capabilities similar to central processing unit of a computer. Any microprocessor-based systems having limited number of resources are called microcomputers. Nowadays, microprocessor can be seen in almost all types of electronics devices like mobile phones, printers, washing machines etc. Microprocessors are also used in advanced applications like radars, satellites and flights. Due to the rapid advancements in electronic industry and large scale integration of devices results in a significant cost reduction and increase application of microprocessors and their derivatives.

·Bit: A bit is a single binary digit.

·Word: A word refers to the basic data size or bit size that can be processed by thearithmetic and logic unit of the processor. A 16-bit binary number is called a word in a 16-bit processor.

·Bus: A bus is a group of wires/lines that carry similar information.

·System Bus: The system bus is a group of wires/lines used for communicationbetween the microprocessor and peripherals.

·Memory Word: The number of bits that can be stored in a register or memoryelement is called a memory word.

·Address Bus: It carries the address, which is a unique binary pattern used to identify

a memory location or an I/O port. For example, an eight bit address bus has eight lines and thus it can address 28 = 256 different locations. The locations in hexadecimal format can be written as 00H – FFH.

·Data Bus: The data bus is used to transfer data between memory and processor orbetween I/O device and processor. For example, an 8-bit processor will generally have an 8-bit data bus and a 16-bit processor will have 16-bit data bus.

·Control Bus: The control bus carry control signals, which consists of signals forselection of memory or I/O device from the given address, direction of data transfer and synchronization of data transfer in case of slow devices.

A typical microprocessor consists of arithmetic and logic unit (ALU) in association with control unit to process the instruction execution. Almost all the microprocessors are based on the principle of store-program concept. In store-program concept, programs or instructions are sequentially stored in the memory locations that are to be executed. To do any task using a microprocessor, it is to be programmed by the user. So the programmer must have idea about its internal resources, features and supported instructions. Each microprocessor has a set of instructions, a list which is provided by the microprocessor manufacturer. The instruction set of a microprocessor is provided in two forms: binarymachine code and mnemonics.

Microprocessor communicates and operates in binary numbers 0 and 1. The set of instructions in the form of binary patterns is called a machine language and it is difficult for us to understand. Therefore, the binary patterns are given abbreviated names, called mnemonics, which forms the assembly language. The conversion of assembly-level language into binary machine-level language is done by using an application called assembler.

Microcomputer Applications Meaning


Technology Used:

The semiconductor manufacturing technologies used for chips are:

·Transistor-Transistor Logic (TTL)

·Emitter Coupled Logic (ECL)

·Complementary Metal-Oxide Semiconductor (CMOS)

Classification of Microprocessors:

Based on their specification, application and architecture microprocessors are classified.

Based on size of data bus:

·4-bit microprocessor

Microcomputer Features

·8-bit microprocessor

·16-bit microprocessor

·32-bit microprocessor

Based on application:

·General-purpose microprocessor- used in general computer system and can be used by programmer for any application. Examples, 8085 to Intel Pentium.

·Microcontroller- microprocessor with built-in memory and ports and can be programmed for any generic control application. Example, 8051.

·Special-purpose processors- designed to handle special functions required for an application. Examples, digital signal processors and application-specific integrated circuit (ASIC) chips.

Microcomputer Applications Class

·Reduced Instruction Set Computer (RISC) processors

What Is Microcomputer Applications?

·Complex Instruction Set Computer (CISC) processors

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