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Flura [38]
3 years ago
10

What is PCM system? essay

Computers and Technology
1 answer:
brilliants [131]3 years ago
7 0

A PCM system consists of a PCM encoder (transmitter) and a PCM decoder (receiver). The essential operations in the PCM transmitter are sampling, quantizing and encoding. All the operations are usually performed in the same circuit called as analog-to digital convert Early electrical communications started to sample signals in order to multiplex samples from multiple telegraphy sources and to convey them over a single telegraph cable. The American inventor Moses G. Farmer conveyed telegraph time-division multiplexing (TDM) as early as 1853. Electrical engineer W. M. Miner, in 1903, used an electro-mechanical commutator for time-division multiplexing multiple telegraph signals; he also applied this technology to telephony.

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8.10 Code Practice Question 3
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def swap(arr, in1, in2):

   w = arr[in1]

   arr[in1] = arr[in2]

   arr[in2] = w

print(terms)

swap(terms, 5, 1)

swap(terms, 2, 4)

swap(terms, 3, 5)

swap(terms, 5, 6)

swap(terms, 6, 8)

swap(terms, 8, 9)

print(terms)

This is how I interpreted the question. If I need to make any changes, I'll do my best. Hope this helps though.

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