disk drive

DISK DRIVES
Disk Drive is used to read and write data on a disk.It has one or more read/write heads to read and write data.There are different types of disk drives for different types of disk.For example a floppy drive reads and writes data from floppy disk

SRAM AND DRAM

DIFFERENTIATE BETWEEN SRAM AND DRAM
DRAM holds its data dynamically .It doesnot hold it indefinitely.Each DRAM memory cell must be constantly refreshed to keep data in DRAM.
SRAM doesnot require refreshing .It holds the data indefinitely as long as computer remains on.

It is faster than DRAM but it is very complex 

memory

DIFFERENTIATE BETWEEN PRIMARY AND SECONDARY MEMORY
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Primary memory is expensive and small but secondary memory is inexpensive and large.Primary memory directly connects to CPU but Secondary mimory is not directly connected to CPU.
Primary memory provides faster data access but secondary memory provides slow data access

MULTIMEDIA

MULTIMEDIA
It is a combination of text ,audio,animations ,still images.It is run by information content precessing devices
such as computerized devices,It can also a part of live process.It has a broader scope than max media
It can be linear and non linear

Linear without naviagation control  such as cinema screen
Linear with control---------------  such as video game

Disadvnatages of BroadBand

DISADVANTAGES OF BROADBAND

Highly monthly charges

It can not support in rural and some distant areas

It can not work where PTCL facility is not available

Due to lack of firewall ,security risk is there for protection of computer

Advantages of BroadBand

ADVANTAGES OF BROADBAND
Following are main advantages of using BroadBand
1.Connection Speed Up to 100 times faster
2.It doesnot affect the phone line
3.This connection is always on
4.No special cable is required

MOBILE WIRELESS BROADBAND

MOBILE WIRELESS BROADBAND

Wireless broadband technology include service from mobile phone service such as AT &T Mobility 

This type of connection cna be stable in almost any area that could also receive a strong cell phone connection

The Iphone service in USA experienced the problem of heavy internet use more than any other providers

Smart Phone Customers use 40 % of the technology use

Iphone is a great achievment in the world of networking for proper and correct funcioning of network traffi