COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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16
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32
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65, 536
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512
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Detailed explanation-1: -Using 16 bits, you can write 65536 addresses (from 0 to 65535, that’s 65536 different addresses), and address 65536 bytes.
Detailed explanation-2: -Since 216 is 65, 536, a processor with 16-bit memory addresses can directly access 64 KB (65, 536 bytes) of byte-addressable memory.
Detailed explanation-3: -For example, 64K means 65, 536 bytes when referring to memory or storage (64x1024), but a 64K salary means $64, 000. The IEEE uses “K” for 1, 024, and “k” for 1, 000. See KB, binary values, space/time and kilogirl.
Detailed explanation-4: -A 16-bit CPU usually has 16 address lines (if the physical memory space is not expanded by a memory management unit). So, one address line alone could only address 2 addresses, because its state can only be be 0 or 1, and a processor with 16 address lines can address 2^16 addresses, i.e. 64k addresses.
Detailed explanation-5: -A 16-bit microprocessor has twenty address lines (A0 to A19) and 16 data lines. The higher eight significant lines of the data bus of the processor are tied to the 8-data lines of a 16 Kbyte memory that can store one byte in each of its 16K address locations.