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A (А) — max. clock frequency 5 MHz (often marked with one dot on the package) B (Б) — max. clock frequency 4 MHz; V (В) — max. clock frequency 3 MHz; G (Г) — max. clock frequency 5 MHz; MUL instruction is supported (often marked with two dots on the package) Second source: Exiton Pavlovsky Posad
Crystal oscillators can be manufactured for oscillation over a wide range of frequencies, from a few kilohertz up to several hundred megahertz.Many applications call for a crystal oscillator frequency conveniently related to some other desired frequency, so hundreds of standard crystal frequencies are made in large quantities and stocked by electronics distributors.
The frequency accuracy relative to the clock frequency is limited only by the precision of the arithmetic used to compute the phase. [4] NCOs are phase- and frequency-agile, and can be trivially modified to produce a phase-modulated or frequency-modulated output by summation at the appropriate node, or provide quadrature outputs as shown in the ...
A phase-locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is fixed relative to the phase of an input signal. Keeping the input and output phase in lockstep also implies keeping the input and output frequencies the same, thus a phase-locked loop can also track an input frequency.
Clock rate or clock speed in computing typically refers to the frequency at which the clock generator of a processor can generate pulses used to synchronize the operations of its components. [1] It is used as an indicator of the processor's speed. Clock rate is measured in the SI unit of frequency hertz (Hz).
It was later renamed Internet Streaming SIMD Extensions (ISSE [2]), then SSE. AMD added a subset of SSE, 19 of them, called new MMX instructions, [ 3 ] and known as several variants and combinations of SSE and MMX, shortly after with the release of the original Athlon in August 1999, see 3DNow! extensions .
The counter implementation's accuracy is limited by the clock frequency. If time is measured by whole counts, then the resolution is limited to the clock period. For example, a 10 MHz clock has a resolution of 100 ns. To get resolution finer than a clock period, there are time interpolation circuits. [6]
[citation needed] By using both edges of the clock, the data signals operate with the same limiting frequency, thereby doubling the data transmission rate. This technique has been used for microprocessor front-side busses , Ultra-3 SCSI , expansion buses ( AGP , PCI-X [ 4 ] ), graphics memory ( GDDR ), main memory (both RDRAM and DDR1 through ...