I have a problem in my textbook "How many 256X8 Ram chips are needed to provide a memory capacity of 4096 bytes?". I know that the answer is supposed to be 16, I'm just not sure why. It seem like it should be 2 since it's 256X8 as opposed to 256 alone. Basically, what I'm trying to say is (256x8)*2=4,096 instead of (256x8)*16 which equals 32,768. Why is it 16?


256x8 = 256 cells that hold 8 bits each, so the total capacity of that chip is 256 bytes (or 2048 bits). 4096/256=16

  • 3
    \$\begingroup\$ Ah, I feel like an idiot. I thought it was 2048 bytes instead of bits. Thanks! \$\endgroup\$ – David Jan 27 '12 at 2:16

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