Final answer:
The question pertains to a digital communication system where symbols are transmitted using specific voltage levels. Digital signals switch between fixed voltage values to represent binary data, which is essential for reliable and efficient data transmission in devices like cell phones and computers.
Step-by-step explanation:
The question deals with a digital communication binary system, where digital signals represent data as binary ones and zeros. In this system, symbol 0 is represented as a -3 V voltage level, and symbol 1 is represented as a +3 V voltage level—not '3 cyc V/s' as mentioned, which is likely a typographical error. These voltage levels are part of digital signal processing, where analog signals are converted into digital format for more efficient and reliable transmission. Integrated circuits are used to process these digital signals and consist of a vast number of transistors operating as switches to create the binary code.
Electrical signals in digital circuits carry information by switching between two fixed voltage values. This is in contrast to analog signals, which vary continuously. By transmitting information as digital signals, the data can be more resilient to degradation over distances and can be more efficiently transmitted due to techniques like data compression.
Cell Phone and Computer Data Transmission
Devices such as cell phones and computers often transmit information using electromagnetic waves. The transmission can be characterized by variations in amplitude (AM), frequency (FM), or phase. This is essential for reliable communication in modern technology, where clear transmission is necessary even when signals are weak. Additionally, computer algorithms can be used to compress the data, allowing more information to be sent in each frequency range, making the most of available bandwidth.