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How many bytes in memory can be addressed?
“Byte addressing” means that each byte in memory is individually addressable, i.e. there is an address x which points to that specific byte. Since there are 2^32 different numbers you can put into a 32-bit address, we can address up to 2^32 bytes, or 4 GB.
Is memory addressed in bytes?
Most modern computers are byte-addressable. Each address identifies a single byte (eight bits) of storage. Data larger than a single byte may be stored in a sequence of consecutive addresses. There exist word-addressable computers, where the minimal addressable storage unit is exactly the processor’s word.
What is byte addressable memory?
Byte addressable memory refers to architectures where data can be accessed and addressed in units that are narrower than the bus. An eight-bit processor like the Intel 8008 addresses eight bits, but as this is the full width of the bus, this is regarded as word-addressable.
How much data can a CPU use at once?
A 32-bit CPU can hold up to 34,359,738,368 bits at a single time. However, data is typically denoted in groups of eight bits, which are known as bytes. Therefore, a 32-bit CPU can be used to process 4,294,967,296 bytes, or 4 gigabytes (GB) at any given time.
What is the largest number that can be stored in one byte?
255
The maximum decimal number that can be represented with 1 byte is 255 or 11111111. An 8-bit word greatly restricts the range of numbers that can be accommodated. But this is usually overcome by using larger words. With 8 bits, the maximum number of values is 256 or 0 through 255.
What is the difference between a byte and a word of memory?
A byte is 8 bits and a word is the smallest unit that can be addressed on memory. The exact length of a word varies.
What determines how quickly CPU works?
Manufacturers label every CPU with a clock speed. This value measures how many process cycles the processor can run per second. Modern processors use gigahertz clock measurements, where 1 GHz represents one billion cycles per second. Between two similarly built CPUs, the one with a higher clock speed will work faster.