The two main jobs of a computer are input/output (I/O) and processing. The role of the operating system in computer I/O is to manage and control I/O operations and I/O devices.
Computers operate a great many kinds of devices. Most fit into the general categories of storage devices, transmission devices, and human-interface devices. Despite the incredible variety of I/O devices, we need only a few concepts to understand how the devices are attached and how the software can control the hardware.
Write a 5- to 6-page, APA-formatted paper (1250 to 1750 words) pertaining to I/O hardware. At a minimum, the paper should address the following:
The main concepts pertaining to how the devices are attached and how the software can control hardware
Relevant points, including definitions of the following:
Buses, especially a PCI bus
Controllers
I/O port registers
Polling
Interrupts
Direct memory access.
Sample Solution
