Which bus is used to address the memory?
Address bus
Address bus – carries memory addresses from the processor to other components such as primary storage and input/output devices. The address bus is unidirectional .
What is the size of RAM address bus * 1 point?
In modern computers, the address buses are generally of 36 bits. With 36 bits of address bus, theoretically, a main memory of 64 GB can be accessed.
How do I know my address bus size?
The total memory can be calculated from the number of address lines and date-lines, i.e. Hence, the address bus width is 10 bits. The data bus of 8 bits will be required to write/read data at each 8-bit memory location.
How many memory addresses are there with a 32-bit bus?
For instance, a computer said to be “32-bit” also usually allows 32-bit memory addresses; a byte-addressable 32-bit computer can address 232 = 4,294,967,296 bytes of memory, or 4 gibibytes (GiB). This allows one memory address to be efficiently stored in one word.
What is address bus and example?
Definition of address bus computers. : an element in a computer CPU that transmits the location of stored information The address bus allows the CPU to send the address to RAM, and the data bus allows the actual data transfer to the CPU.
What do you mean by 20 bit address bus?
The number of lines (wires) in the address bus determines the maximum amount of RAM that can be directly accessed by the CPU as each line carries one bit of the address. In 1981, the IBM PC had a limit of one megabyte of RAM because its address bus had 20 lines, and 20 bits represents the number 1,048,576 in binary.
What is bus size?
The size or width of a bus is how many bits it carries in parallel. Common bus sizes are: 4 bits, 8 bits, 12 bits, 16 bits, 24 bits, 32 bits, 64 bits, 80 bits, 96 bits, and 128 bits. Computers use such buses to link: CPU to on-board Memory. multiple CPUs in a multi-cpu system.
What is the purpose of address bus * 1 point?
An address bus is a computer bus architecture. It is used to transfer data between devices. The devices are identified by the hardware address of the physical memory (the physical address).
How do I find the memory size of an address?
To put it another way, Step 1: calculate the length of the address in bits (n bits) Step 2: calculate the number of memory locations 2^n(bits) Step 3: take the number of memory locations and multiply it by the Byte size of the memory cells.
What is address bus size?
Address Bus Size The size of the address bus determines how much memory the CPU can address directly. For example, a 20-bit address bus can access up to one megabyte (1MB); 24 bits reaches 16MB, and 32 bits can handle four gigabytes (GB). See binary values.
What is a 32-bit address bus?
A 32-bit address is the address of a single byte. Thirty-two wires of the bus contain an address (there are many more bus wires for timing and control). Sometimes people talk about addresses like 0x2000, which looks like a pattern of just 16 bits. But this is just an abbreviation for the full 32-bit address.
How many memory addresses are there with 64-bit addresses?
In principle, a 64-bit microprocessor can address 16 EiB (16 × 10246 = 264 = 18,446,744,073,709,551,616 bytes, or about 18.4 exabytes) of memory. However, not all instruction sets, and not all processors implementing those instruction sets, support a full 64-bit virtual or physical address space.