External Devices and Input/Output Functions Quiz

Which category of external devices is suitable for communicating with the computer user?

What is the major function of an I/O module related to device communication?

In the context of input/output, what is the function of a transducer in a keyboard?

Which category of external devices is suitable for communicating with remote devices?

What type of signal is generated when a user depresses a key on a keyboard?

What category of external devices is suitable for storing data in IRA code?

What does the Interrupt driven I/O technique allow the processor to do?

What is the main drawback of the Programmed I/O technique?

What does an I/O Device Controller handle?

What distinguishes Direct Memory Access (DMA) from programmed and interrupt I/O techniques?

What type of commands may an I/O module receive when addressed by a processor?

What does Memory Mapped I/O have in common with memory?

What distinguishes Isolated I/O from Memory Mapped I/O?

Processor communication consists of involves command decoding, data, status reporting, and ______ recognition

Provide the Block diagram of an ______ module

Make a distinction between I/O channel (I/O Processor) and I/O – device – ______

Explain briefly the Programmed I/O ______

Explain briefly the Interrupt driven I/O ______

Explain briefly the Direct memory Access I/O ______

List the common I/O commands that an I/O module may receive when it is addressed by a ______

Make a difference between memory mapped I/O and isolated modes of addressing an I/O in programmed I/O ______

Memory mapped I/O Devices and memory share an address space I/O looks just like memory read/write No special commands for I/O Large selection of memory access commands available Isolated ______ Separate address spaces Need I/O or memory

With both programmed and interrupt I/O, the processor is responsible for extracting data from main memory for output and storing data in main memory for input. The alternative is known as direct memory ______

External devices can be categorized into Human readable, Machine readable, and ___________ devices.

The major functions for an I/O module include control and timing, processor communication, device communication, data buffering, and ___________.

The I/O module communicates both with the processor and with the ___________ unit.

Keyboard input generates an electronic signal that is interpreted by the ___________ in the keyboard.

On output, IRA code characters are transmitted to an external device from the I/O module, where the ___________ interprets this code.

The text generated from keyboard input can be stored in the ___________ code.