Specifications of computer hardware
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machine word length
Machine word length, the number of bits that the CPU can process data at a time, usually equal to the number of bits in the CPU register. The longer the word length, the larger the range of numbers, the higher the precision, and the faster the operation speed
storage
Memory capacity (total number of binary digits) = main memory capacity + auxiliary memory capacity
主存容量=存储单元*存储字长
存储单元个数=2^MAR位数
存储字长=MDR位数
Modern computers also commonly use the number of bytes to describe capacity, 2M=2(2 20) bits=2 18 bytes
calculating speed
- main frequency
- number of cores
- Gibson method: comprehensively consider the time of each instruction and the proportion of all operations
- instruction execution speed
- The average number of instructions executed per unit time, in MIPS (millions per second)
- CPI (the clock cycle required to execute 1 instruction, the reciprocal of the main frequency)
- FLOPS (floating point operations per second)