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SOFTWARE
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Difference between programmed IO and interrupt IO?
1.Programmed IO is the process of IO instruction written in computer program , where Interrupt Initiated IO is done by using interrupt and some special command. 2.The advantage of Interrupt Initiated IO is ,it is a time consuming process than Programmed IO. 3.In Programmed IO technique to transfer data,required constant motoring on peripheral by CPU,once data transfer is initiated, CPU have to wait for next transfer. In Interrupt Initiated IO once data transfer initiated ,CPU execute next program without wasting time and the interface keep monitoring the device. When the interface determines that the device is ready to transfer data, it generate an interrupt request,CPU stop the current task,execute the transferring process,and then return to the previous on-processing task.
Which device controls the flow of electrons in an electric circuit?
Flow of electricity in a circuit is controlled by using 'resistor'.
What is a moon of Jupiter that is dotted with over 100 active and inactive volcanoes?
Horse Isle: Io~TwilightPrincess, Brown and Roan.
Why does Io have so many active volcanoes while Europa does not?
Io is close to the massive Jupiter. As a result " tidal forces" cause large amounts of "flexing" inside Io. This means that Io is volcanically active. The situation with Earth's moon is not really comparable.
When was Io canto created?
Io canto was created on 2006-11-10.
WHAT controls every input and output device?
The motherboard.
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.
What unit controls input and output devices?
Every i/o device is controlled by software. Every new device that is installed you must install its device drivers to control the device.
What interface that controls a peripheral device is?
What interface that controls a peripheral device is.
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.
What is special about Io the moon?
The moon controls the tides of the earthly seas.
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.
