NVAEducation

NVAEducation

Question No.1690

Assume that three I O devices are connected to a 32-bit 10 MIPS-01690

Online Quiz This subjective question is related to the book/course vu it430 E-Commerce. It can also be found in vu it430 Mid Term Solved Past Paper No. 1.

Question 1: Assume that three I/O devices are connected to a 32-bit, 10 MIPS CPU. The first device is a hard drive with a maximum transfer rate of 1MB/sec. It has a 32-bit bus. The second device is a floppy drive with a transfer rate of 25KB/sec over a 16-bit bus, and the third device is a keyboard that must be polled thirty times per second. Assuming that the polling operation requires 20 instructions for each I/O device, determine the percentage of CPU time required to poll each device.
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