Answer the following questions about RAM/Registers/ALU. • Given 4x8 RAM, What ki

Question

Answer the following questions about RAM/Registers/ALU.

• Given 4x8 RAM, What kind of decoder would be needed for building the RAM?

• How many flip-flops would be needed for 4x8 RAM?

• If 6 D Flip-Flops were arranged in sequence, describe the output sequence after 8 samples, given the input is 00001111 (assume 0’s from before the sampling times).

• If I want to set 1011 into a 2x4 memory in the first word, what would I set the following to?

– Read Enabled

– Write Enabled

– Address

– (In3,In2,In1,In0)

• Describe the problem that would occur if d = 0.13ms and T = 0.11ms

Explanation / Answer

Given 4x8 RAM, What kind of decoder would be needed for building the RAM?

Ans:memory size = 2^2x4 decoder

address lines = 2

data lines = 4

so size of the decoder to 2x2^2 = 2x4

How many flip-flops would be needed for 4x8 RAM?

Ans: 8

number of data lines =number of flip flops

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