Figure 5.17 shows one of the early SRAMs, the 16x4 signetics 7489 chip, which st

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Question

Figure 5.17 shows one of the early SRAMs, the 16x4 signetics 7489 chip, which stores 16 4-bit words.

a. list the mode of operation of the chip for each CS input pulse shown in figure 5.17c.

b. List the memory contents of word locations 0 through 6 after pulse n.

c. What is the state of the output data leads for the input pulses h though m?

Figure 5.17 shows one of the early SRAMs, the 16x4 signetics 7489 chip, which stores 16 4-bit words. a. list the mode of operation of the chip for each CS input pulse shown in figure 5.17c. b. List the memory contents of word locations 0 through 6 after pulse n. c. What is the state of the output data leads for the input pulses h though m?

Explanation / Answer

at n operation mode is storage at m operation mode is read similarly for l,k,j,i,h memory content after n 1010 0010 1100 0100 1000 0000 the state of the output data leads for the input pulses h though m 101010

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Figure 5.16 shows that step 3 of a conditional branch instruction may result in

Figure 5.2 shows a common biological phospholipid called phosphatidyl choline. W

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Figure 5.17 shows one of the early SRAMs, the 16x4 signetics 7489 chip, which st

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