How do you calculate the maximum amount of addressable memory?

So to work out the amount of addressable memory, we must multiply the number of addresses by their size.
  1. Total Addressable Memory = (2^address bus width) * Data bus width.
  2. IE a machine with a 16 bit Data Bus and 32 bit address bus would have.
  3. (2^32)*16 bits of accessible storage.
  4. or 8GB – Do the math yourself to prove it.

What is the maximum addressable memory capacity?

16 address bits, 16 address pins

The memory on these CPUs is addressable at the byte level. This leads to a memory addressable limit of 216 × 1 byte = 65,536 bytes or 64 kilobytes.

How is memory capacity calculated?

Instead, we use a set of standard sizes that scale up as memory requirements get larger: 1 bit = a single 1 or 0. 4 bits = a nibble.

Calculating Memory Size.
1 MegaByte = 1000 KiloBytes1 MebiByte = 1024 KibiBytes
1 GigaByte = 1000 MegaBytes1 GibiByte = 1024 MebiBytes
1 TeraByte = 1000 GigaBytes1 TebiByte = 1024 GibiBytes

What is the maximum directly addressable memory capacity 64 bit?

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.

What is meant by addressable memory?

Content-addressable memory (CAM) is a special type of computer memory used in certain very-high-speed searching applications. It is also known as associative memory or associative storage and compares input search data against a table of stored data, and returns the address of matching data.

How much RAM can 32 bit support?

4 GB
The CPU register stores memory addresses, which is how the processor accesses data from RAM. One bit in the register can reference an individual byte in memory, so a 32-bit system can address a maximum of 4 GB (4,294,967,296 bytes) of RAM.

What is the maximum addressable memory of a 32 bit microprocessor with 24 bit address?

four gigabytes
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).

What is the maximum size of addressable primary memory on a 24 bit machine?

At any rate, with 24-bit addresses, we’d have 224=16777216=16M possible addresses, hence that many possible chunks. If each chunk was a byte that would mean that the total addressable memory would be 16777216 bytes, or 16MB.

How is 64 bit better than 32 bit?

Computers with 32-bit processors are older, slower, and less secure, while a 64-bit processor is newer, faster, and more secure. … Meanwhile, a 64-bit processor can handle 2^64 (or 18,446,744,073,709,551,616) bytes of RAM. In other words, a 64-bit processor can process more data than 4 billion 32-bit processors combined.

How much memory is addressable on a 16 bit address bus?

A 16-bit integer can store 216 (or 65,536) distinct values. In an unsigned representation, these values are the integers between 0 and 65,535; using two’s complement, possible values range from −32,768 to 32,767. Hence, a processor with 16-bit memory addresses can directly access 64 KB of byte-addressable memory.

What maximum main memory is addressable by 8 bit address bus?

13.6 Memory addressing size
Address bus sizeAddressable memory (bytes)

What is the memory addressability of the CPU?

A memory address is a unique identifier used by a device or CPU for data tracking. This binary address is defined by an ordered and finite sequence allowing the CPU to track the location of each memory byte.

What is addressable unit?

In general it means the smallest data item you can access with a unique address. Some computers have byte-addressable memory which means that each byte of data in memory has a unique address.

Why is memory byte-addressable?

The 386SX, which addresses memory in 8-bit units but can fetch and store it 16 bits at a time, is termed byte-addressable. The advantage of word addressing is that more memory can be addressed in the same number of bits. The IBM 7094 has 15-bit addresses, so could address 32,768 words of 36 bits.

How does content addressable memory work?

Content-addressable memory (CAM) is computer memory that operates like a hardware search engine for search-intensive applications. … Data stored on CAM, on the other hand, can be accessed by searching for the content itself, and the memory retrieves the addresses where that content can be found.

How are memory locations addressed?

Each memory location has a physical address which is a code. … The memory controllers’ bus consists of a number of parallel lines, each represented by a binary digit (bit). The width of the bus, and thus the number of addressable storage units, and the number of bits in each unit, varies among computers.

What is the maximum size of byte addressable memory that could be accessed using a 32 bit address bus?

7 Answers. Yes, a 32-bit architecture is limited to addressing a maximum of 4 gigabytes of memory. Depending on the operating system, this number can be cut down even further due to reserved address space.

Is memory byte addressable or word addressable?

In reality, memory is only byte addressable. It means: A binary address always points to a single byte only. A word is just a group of bytes – 2 , 4 , 8 depending upon the data bus size of the CPU.

How many memory locations can this processor address?

Answer: 2 ^ 14 memory location can be addressed by 14 bit address line. Answer: Aroun 16 Kilo Bytes of memory locations can be addressed.

Which of the following RAM locations are bit addressable?

The bit-addressable RAM locations are 20H to 2FH. These 16 bytes provide 128 bits of RAM bit-addressability since 16×8= 128. They are addressed as 0 to 127 (in decimal) or 00 to 7FH.

Is x86 byte addressable?

The x86 Intel architecture is also byte addressable. If we have an integer-sized piece of data, we may want to identify the various bits. This can be done by numbering the bits.

What is the maximum number of memory locations that can be addressed by a chip with 16 address pins?

65,536 words
And that limits the amount of memory that can be accessed. For example, with a 16-bit address register, the address bus has 16 bits to address RAM and ROM. With 16 bits, a maximum of 216 = 65,536 words can be addressed.

How many memory locations can be addressed by a microprocessor with 16 address lines?

Using 16 bits, you can write 65536 addresses (from 0 to 65535, that’s 65536 different addresses), and address 65536 bytes. 65536 bytes is 64kB.

How many memory locations are addressed using 18 address bits?

How many memory locations are addressed using 18 address bits? Explanation: For n address bits, the memory location will consist of 2n bits. Using 18 address bits, 218 = 262,144 (= 256 K) words are addressed.

What is the maximum memory size that can be addressed directly in a computer which has a processor with 29 bit memory addresses?

The microprocessor can access 216=65536 memory addresses, regardless of the size of data held at each memory address.