How many address bits are needed to address 64K memory?

How many address bits are needed to address 64K memory?

Sixteen address lines will address 64K bytes. If you count in binary (which computers always do) and limit yourself to 16 binary columns, you can count from 0 to 65,535. (The colloquial ”64K” is shorthand for the number 66,536.)

How many address lines are required to access 2 MB How many of these lines are connected to the address inputs of all chips?

Answer is 21. Now 1048576 Byte = 2^20 Byte means for 1MB we need 20 address lines. So 2MB = 2*2^20=4^20=2^21 ; means for 2MB we need 21 address lines.

What address range is 32K?

I’m aware that 32k = 32 * 2^10 which equals **32768 memory addresses** .

Where are memory addresses stored?

When writing to memory, the CPU writes data from MDR to the memory location whose address is stored in MAR. MAR, which is found inside the CPU, goes either to the RAM (random-access memory) or cache.

How many memory addresses are there?

Each byte of main storage has an address. Most modern processors use 32-bit addresses, so there are 232 possible addresses. Think of main storage as if it were an array: byte[0x00000000 …

What data type is a memory address?

pointer

Does each byte have its own address?

Every byte of memory has its own address, no matter how big the CPU machine word is. Eg. Intel 8086 CPU was 16-bit and it was addressing memory by bytes, so do modern 32-bit and 64-bit CPUs. To access the first byte it has to skip 0 bytes, so first byte’s address is 0.

What does a memory address look like?

Memory addresses are 32-bits long on most CPUs today, although there is a increasing trend toward 64-bit addressing). The location of i has a specific address, in this case 248,440. The pointer p holds that address once you say p = &i. The variables *p and i are therefore equivalent.

When the byte address is stored from right to left it is called?

In the Big-Endian storage order, the “big”, most significant, byte 0x44 is stored “first”, at the lowest memory location 101. The 0x44 displays to the left of the other bytes, which follow in ascending left-to-right memory address order: 102, 103, 104.