A huge number of bits are needed for representation in the computer. Bit number can be reduced by image compression techniques. Both response time and throughput time are concerns. 2.4 Video carries sequences of pictures in time. Elapsed time between end of transmission of an inquiry and the beginning of the receipt of a response, measured at the inquiry terminal.
Productivity increases with faster response time.
Response time has become critical for transaction processing, and for the World Wide Web. Systems with a 3 second or faster retain user attention. Greater than 3 seconds loses users attention.