Peripheral
Adapter : Modern computers perform
operations very much faster than most
peripherals can generate or accept data. Programs and data are
moved between memory and the CPU at such a speed that it
would be inappropriate to connect peripherals directly to the CPU.
So some form of interface (Peripheral Adapter) is required
to convert between the fast internal communications and the relatively slow external devices.
Operations of Peripheral Adapter :
The
CPU performs arithmetic and logic operations and
controls
the operation of the entire system.
1. Some tasks are completely
controlled by CPU, but for some
others,
it merely initiates a sequence of events which are
controlled
elsewhere, such as in a peripheral device.
2. The peripheral devices permit
communication of
information
and storage of information.
3. Peripherals normally
communicate through the CPU.
4. Some may communicate themselves
and memory bypassing
CPU
5. The number and types of
peripheral devices depend on the
main
applications for which the computer system is
intended.
No comments:
Post a Comment