Nyquist frequency signal, whereas "Nyquist frequency" is a property of a discrete-time system. When the function domain is time, sample rates are usually expressed in samples per second, and the unit of Nyquist frequency is cycles per second (hertz). When the function domain is distance, as in an image sampling system, the sample rate might be dots per inch and the corresponding Nyquist frequency would be in cycles/inch. Referring again to Figure 1, undersampling of the sinusoid at 0.6 f is what allows there to be a lower-frequency "alias", which is a different function that produces the same set of samples. That
Cycles per instruction the number of clock cycles it takes to execute an instruction is 1/2 (CPI = 1/2 < 1). For the multi-cycle MIPS, there are five types of instructions: If a program has: then, the CPI is: formula_6 A 400-MHz processor was used to execute a benchmark program with the following instruction mix and clock cycle count: Determine the effective CPI, MIPS (Millions of instructions per second)rate, and execution time for this program. formula_7 formula_8 since: formula_9 and formula_10 formula_11 Therefore: formula_12 Cycles per instruction In computer architecture, cycles per instruction (aka clock cycles per instruction, clocks per instruction, or CPI)