Review Chapters 4 To 6 And Answer

Chapter 43. Quite a number of interface standards have been developed over years of which EIA-232F is among the earliest. This interface standard is an update of the RS-232C published in 1969. However, its performance is considered to be primitive by the modern standards, which was originally designed to link a computer or DTE to a modem or DCE. (Williams T., 2004) Compared to it, the USB is a modern standard. It also interconnects many types of peripheral devices to the computer. EIA-232F’s unbalance design is also susceptible to external noise pickup. However, USB avoids such noise and is also relatively thinner and space saving with the hot pluggable feature.9. An asynchronous connection, generally found in microcomputer to dial up modem and terminal to modem connections is among the simplest examples of a data link protocol. The unit of transfer between sender and receiver in such connections is a single byte of data. In case of synchronous connections the unit of transmission is a sequence of characters which may be thousands of characters in size. In case of the isosynchronous connections, the data is delivered neither too slow and nor too fast.14. The main advantages of