Explain why RAMs and ROMs are both random-access memories.

Explain why RAMs and ROMs are both random-access memories.
What memory address (0 through 256) is represented by each of the following hexadecimal numbers:(a) 0A16    (b) 3F16    (c) CD16
    Draw a basic logic diagram for a 512 × 8-bit static RAM, showing all the inputs and outputs.
Redraw the block diagram in Figure 12-11 for a 64k × 8 memory.
    What is the capacity of a DRAM that has twelve address lines?
Determine the truth table for the ROM in Figure 12-89. Address decoder 01 0 1 2 3 A0 A1 A2 4 5 6 7 O3 O2 O1 O0 capacity of a DRAM that has twelve address lines? Picture is attached.