64-bit computing 64-bit computing In computer architecture, 64-bit computing is the use of processors that have datapath widths, integer size, and memory address widths of 64 bits (eight octets). Also, 64-bit computer architectures for central processing units (CPUs) and arithmetic logic units (ALUs) are those that are based on processor registers, address buses, or data buses of that size. From the software perspective, 64-bit computing means the use of code with 64-bit virtual memory addresses. However, not all 64-bit instruction sets support full 64-bit virtual memory addresses; x86-64 and ARMv8, for example, support only 48 bits of virtual address, with the remaining
Byte (magazine) highest of all computer magazines. "Byte" earned $9 million from revenue of $36.6 million in 1983, twice the average profit margin for the magazine industry. It remained successful while many other magazines failed in 1984 during economic weakness in the computer industry. The October 1984 issue had about 300 pages of ads sold at an average of $6,000 per page. From 1975 to 1986 "Byte" covers usually featured the artwork of Robert Tinney. These covers made "Byte" visually unique. In 1987 Tinney's paintings were replaced by product photographs, and Steve Ciarcia's "Circuit Cellar" column was discontinued. Around 1985 "Byte" started