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If your address bus is 20-bits wide, how much memory can your computer address approximately?
With a 20-bit address bus, a computer can address approximately 1,048,576 memory locations, which is equivalent to 1 megabyte of memory.
What factors determine how much physical memory an 80286 can address?
An 80286 has a 24 bit address bus. As such, it can address 224, or 16,777,216, or 16 MB of memory.
If a memory had 16 bit address bus and a 32 bit data bus what is the largest size of the memory?
A memory with a 16 bit address bus can address 216 or 65536 distinct items. If each item is 32 bits in size, then the item is 4 bytes. The size of this memory is then 262144 bytes. (256Kb)
How many memory locations can be addressed by a μp with 14-address bus?
A 14 bit address bus can select 16384 locations.
Why microcomputer system based on 8 bit microprocessor have 64K memory?
Even though the 8085 is an 8 bit microprocessor, it can address 64K memory, because it has a 16 bit address bus.
How many memory locations address bus can access?
A 10 bit address bus can address 210, or 1024 different locations.
What is size of data bus and the address bus in 8085?
A 16-bit uP operates on instructions and data in 16-bit quantities. Therefore the databus is 16-bits. A 16-bit uP may also operate on larger quantities of data, however multiple CPU registers must be concatenated in order to maintain the data element in the uP register space. The data is always delivered to the processor 16 bits at a time. The amount of memory which it can address is a separate issue---the address bus size is totally distinct from the data bus size. The data bus determines how much memory may be delivered to the uP per cycle. The address bus size determines how much physical memory may actually be accessed by the uP. Therefore it is variable depending on how much memory is available. Typical systems today have 32-bit address busses which limit addressable memory to 4Gigabytes. (2^32) = 4G.
Why memory capacity of 8085 mp is 64 KB?
The memory capacity of the 8085 microprocessor is 64 kb because the address bus is 16 bits, and you can address 216, or 64kb, with a 16 bit address bus.
Why address bus is 20 bit?
A 20-bit address bus can address 2^20 distinct memory locations, which equals 1,048,576 (or 1 megabyte) of memory. This allows the system to access a sufficient amount of RAM and memory-mapped I/O devices. The choice of a 20-bit address bus is often a design decision to balance performance and cost, enabling support for a wide range of applications without requiring larger, more expensive memory configurations.
Why 4 bit address bus is grounded?
The data bus in the 8086 is 16 bits in size, while the address bus is 20 (16bits would only address 64KB of memory, an extra 4 bits allows to address the total of 1MB, this is done trough segmentation of the memory). To form a multiplexed of data bus and address bus, four bits of 8086 address bus are grounded.
How many memory locations can be addressed by a microprocessor with 14 address lines?
2^14 memory locations. In general for n-bit address bus, its 2^n
How many Terabytes of memory would a 40 bit address bus be able to address if the system word length was 8bits 16bits 32bits?
1TB is 240 bytes. It follows that a 40 bit address bus can address 1TB. Since 1TB is 1TB regardless of the system's word size, a 40 bit address bus can address 1TB on a computer with an 8 bit, a 16 bit, a 32 bit, or any other word size.
