Which of the following is not an example of a currently available 8-bit microprocessor?
A) 8085 B) Z-100 C) 6800 D) Z-80
B
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What pool depth is necessary if fish are to be left in the water garden through the winter?
a. 1 to 2 feet c. 3 to 4 feet b. 2 to 3 feet d. Fish will not survive at any depth
A fine pitch band should be used for material that is:
A) Soft B) Hard C) Thick D) Thin
The time it takes for a square wave to go from 10% to 90% of its voltage level is called
A) rise time. B) fan-out. C) propagation delay. D) fall time.
In this problem, we study a T1 carrier system used in digital telephony. Voice signals are usually filtered using a low-pass filter of cut-off frequency 3.4 kHz and then sampled at 8 kHz. This system multiplexes samples from 24 voice signals in a single sampling period. Voice signals are coded with 8-bit PCM, and each frame (one sampling period) consists of 24 samples plus a single bit added for synchronization.
a. Calculate the duration of each bit. Note that this system multiplexes 24 samples each with 8 bits plus a single bit onto the time duration between two consecutive samples Ts = 1/ fs . b. Calculate the resulting transmission rate. Known quantities: Voice signals have bandwidth of 3.4 kHz and sampled at 8 kHz with an 8-bit quantizer. Each frame of the T-1 line consists of 24 voice channel samples plus a single bit for synchronization. Find: a) Duration of each bit. b) Transmission rate.