Off-line storage Term used to describe any storage that is removable and cannot be accessed by the computer
once removed. A good example of off-line storage is a floppy
disk. Off-line storage allows a user to store information that will not
be affected by computer viruses or hardware failure.Although off-line storage could be considered secondary storage, we've
separated these into their own category because this media can be
easily removed from the computer and stored elsewhere.
Computer Buses A computer system consists of different devices.CPU must be able to communicate with all devices. The devices are connected together by a communications channel called bus. A bus consists of a set of communication lines or wires. It is used to move a large amount of bits in the form of electrical pulses from one unit to another. The bus is used to connect the following units: Central Processing Unit Control Unit Arithmetic and Logic Unit Main Memory ( RAM, ROM) Input / Output Devices Bus is a common path to transfer data and commands between CPU, memory and input / output devices.It is also used to send or receive data from secondary storage.The capacity of a bus depends on the number of data lines in it.A bus with 16 lines can carry 16 bits or 2 bytes at a time. A bus with 32 lines can carry 32 bits or 4 bytes at a time . Types Of Buses Different types of buses are as follows: 1. Data Bus 2.Addres...

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