11 th Computer Science English Medium Volume 1

11 th Computer Science. English Medium Volume. 1 | 3 rd Lesson : Computer organisation DONE BY DINESH. A www. Padasalai. Net

INTRODUCTION �Computer is a combination of Hardware & Software � Hardware + Computer System Software � How to interconnect the hardware & Software that means Input, Output , CPU and Memory devices

BASICS OF MICRO PROCESSORS • CPU is the major component of the computer to perform all taks. • Microprocessor – Introduced in 1970 by INTEL (4004) • ALU – To perform Arithmetic Calculations. • Control Unit – To Control the overall operation • Register- Internal Memory

INTERCONNECTING THE MICROPROCESSOR. INPUT/OUTPUT ALU Register Control Unit Memory RAM ROM

CHARACTERISTICS OF MICROPROCESSOR. �Clock speed (Internal clock – MHz/GHz) �Intruction set (perform operation – designed & Excuted) �Word Size – No. of. bits.

�BUS – Connection (RUTER) �MAR – Memory Address Register �R/W - Read Write. �RAM – Random Access Memory. �ROM – Read only Memory.

TYPES OF MICROPROCESSOR. �RISC – Reduced Intruction set computer �CISC – Complex Instruction set computer.

MEMORY DEVICES �Computer Memory is the “Storage Space “.

1) MAIN MEMORY �Main Memory is the “Temporary Memory” �Types of Memory

EXPLAIN �RAM – Random Access Memory �ROM – Read only memory �DRAM – Dynamic RAM �SRAM – Static RAM �PROM – Programmabole Read Only Memory �EPROM – Erasable Programmable Read Only Memory �EEPROM – Electrically Erasable Programmable Read Only Memory.

2) CACHE MEMORY �Very high speed �Very high Expensive �Memory Retrival process �Fast Response Time.

3) SECONDARY STORAGE DEVICES �Permanent Memory �Non – Volatile. q Hard Disks q Compact Disc (CD) q Digital Versatile Disc (DVD) q Flash Memory Devices q Blu – Ray Disc.

�Magnetic disk on which you can store dat. �It come with a single or double sided disk.

2) COMPACT DISC �Compact Disc (CD) �Made from 1. 2 mm thick �A thin layer of Aluminum or gold is applied to the surface. �Cd Data is represented as tiny indentations know as “lands” �The Capacity of an ordinary CD – ROM is 700 MB

3) DVD (Digital Versatile Disc) �Capable of storage = 4. 7 GB �Compare to CD large storage �One /Two side �Single side 12 cm diameter = 4. 7 GB �Double side = 8. 5 GB (12 cm) � 8 cm DVD = 1. 5 GB

�Electronic Non-Volatile storage �PDA – Personal Digital Assistants �Access Time Read (or) Write a character in Memory �Size 1 GB to 2 TB.

5) Blu-Ray Disc �High density optical Disc. �Double layer Disc �More the 5 times capacity of a DVD & 70 times of CD �Blue-Ciolet laser to write

�Enables. q Rewriting q Recording q Play HD-Videos q Store large amount of data

PORTS AND INTERFACES �The Motherboard of a computer has many Input/Output sockets that are connected to the ports and Interfaces.

The Various Types of Ports �Serial Port. �Parallel Port �USB 3. 0 Port �VGA Connector �Audio Plugs �Ps/2 �SCSI Port �HDMI

1) Serial Port �To connect a External Devices �Eg Old CPU Connection Ports

�To connect the Printes �Eg Old printers connect port

�To connect External Devices �Eg Pendrive, Scanner, Printer, …ect. .

4) USB 3. 0 Port � 3 rd Major Version of USB �USB Universal Serial Bus �Fast transfer the data 5 GB/Second

5) VGA Connector �To connect the monitor/LCD projector �VGA Video Graphics Array

�To connect Speaker, Headphone

�To connect Mouse & Keyboard

8) SCSI Port �To connect Hard disk & Network Connection.

�HDMI High Definition Multimedia Interface �Eg Lcd Projector & Smart TV Connection.

CPU BACK SIDE

� WE GROWTH OUR TECHNOLOGY

MOBILE NO : 999427909 Thank You Done By Dinesh. A