That depends on the computer architecture. Most modern architectures address memory down to the 8-bit byte, however some architectures (often supercomputers) only address to the memory word which may be 64 bits or more long.
Early computer architectures had various sizes of addressable memory unit: individual bit, decimal digit, 10-digit signed decimal word, 12-digit/character decimal word, 5-bit character, 6-bit character, 12-bit word, 9-bit quarterword, 18-bit halfword, 36-bit word, 20-bit halfword, 40-bit word, 60-bit word, etc.
program
a byte is abasic storage unit in memory. when application program instructions and data are transferd to memory from storage devices. byte addressable memory refers to memory address that is accessed one byte (8 bits) at a time as opposed to 2 byte(16 bits), 4 byte(32 bits) or 8 byte(64 bits) addressable memory.
A byte (character) is the basic storage unit in memory.
The smallest addressable unit of storage on a disk is called a sector.
a bit.
RAM is generally measured in Megabytes or Gigabytes
A byte is the basic unit of information in a computer. It is usually the smallest addressable object in memory. The size of a byte is a function of the design of the computer, but nearly universally, it has come to mean 8 bits. (Octet is a more precise definition of 8 bits of memory, in case there is any dichotomy.)
its also called content 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, associative storage, or associative array
It is called a block (or sector). The size of the block varies depending upon the size of the disk, advanced preferences (the size of files normally being used on that disk), and the filesystem being used. They normally run from 512Bytes to 64KiB. As disk capacity continues to grow, look for even larger block sizes to come :-)
Usually high speed SRAM with CAM (content addressable memory) line address tags.
64 GB of RAM.
memory is measured in kilobytes , its basic unit is bit , and 8 bit = 1 kilobyte(kb)