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No.
An I/O device can be either internal (installed inside the computer case) or external (installed outside the case).
Internal:
network card, sound card, video capture card, and video card.
External:
keyboard, monitor, mouse, printer, scanner, digital camera, and flash drives.
pg 392, seventh edition
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What is IO bar for pci device?
Fusion-IO.
What is the Difference between memory mapped IO and peripheral mapped IO?
A memory mapped IO device is an IO device that responds to a specific address when IO/M- is low. A peripheral (or IO) mapped IO device is an IO device that responds to a specific address when IO/M- is high.Many system designers ignore IO/M- in favor of memory mapped IO.This eliminates one term in the chip select logic for every device.This allows you to use all addressing modes and instructions when manipulating an IO device, as opposed to using only IN and OUT.This allows you to potentially have more than 256 different IO devices.The downside is that you reduce the addressable main memory in the system, i.e. you cannot have all 64K available to you, but this is not generally a problem in most controller designs. You also must decode 16 address lines instead of just 8 when accessing the device.
Differentiate between memory mapped IO and IO mapped IO?
Memory mapped IO is one where the processor and the IO device share the same memory location(memory) while IO mapped IO is one where the processor and the IO device have different memory located to each other.
An input and output device can only be internal?
That's not compulsory
What controls every IO device?
SOFTWARE
Full form of Io?
The full form of Io is Input/Output. It refers to the communication between a computer and its external devices or networks.
Is io a scrabble word?
No, it is not. It is an abbreviation of 'Internal Organ' or its similar.
What is internal energy reserve in humans?
internal energy reserve io humans in the form of carbohydrates is 'glycogen'.
Block diagram of 8257 dma controller?
it is a device to transfer the data directly between io device and memory without through the cpu so it performs a high-speed data transfer between memory and io device
How do you xxplain how DMA offers an improvement over CPU programmed IO?
It offloads actual IO processing from CPU to the device hardware. This frequently allows the IO device to perform its operations on cycles that the CPU could not have made use of anyway, resulting in a double benefit.
How does a device initiate communication with the CPU?
io/mem wire?
Is modem a processing device?
Not in the strictest sense. It is an IO device and a converter. They often do have processors on them, and they are used for conversion, compression, and decompression.
