BASIC IT KNOWLEDGEFOR MBA STUDENTS

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MY COMPUTERCreated By Jithesh Nair

What is a computer ?

Difference among human and computer

COMPUTER COMPONENTS

COMPUTER MEMORY

• PRIMARY MEMORY• SECONDARY MEMORY

PRIMARY MEMORY ARE……RAM (RANDOM ACCESS MEMORY)

ROM(READ ONLY MEMORY)

DIFFERENCE BETWEEN RAM AND ROM

?• RAM is the memory available for the operating system, programs

and processes to use when the computer is running. ROM is the memory that comes with your computer that is pre-written to hold the instructions for booting-up the computer.

• RAM requires a flow of electricity to retain data (e.g. the computer powered on).ROM will retain data without the flow of electricity (e.g. when computer is powered off).

• RAM is a type of volatile memory. Data in RAM is not permanently written. When you power off your computer the data stored in RAM is deleted. ROM is a type of non- volatile memory. Data in ROM is permanently written and is not erased when you power off your computer.

TYPES OF RAM

• SDRAM• DDR1• DDR2-january26 2005• DDR3-• DDR4 - launched September 2012

SECONDARY MEMORY

• Hard Disk• Usb drive(pendrives..other storege devises,

HARD DISKSINTERNAL HARD DISK AND EXTERNAL HARD DISK