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1 decade counter (separate divide-by-2 and divide-by-5 sections) 14 SN74LS90: 74x91 1 8-bit shift register, serial in, serial out, gated input 14 SN74LS91: 74x92 1 divide-by-12 counter (separate divide-by-2 and divide-by-6 sections) 14 SN74LS92: 74x93 1 4-bit binary counter (separate divide-by-2 and divide-by-8 sections); different pinout for ...
For power-of-2 integer division, a simple binary counter can be used, clocked by the input signal. The least-significant output bit alternates at 1/2 the rate of the input clock, the next bit at 1/4 the rate, the third bit at 1/8 the rate, etc. An arrangement of flipflops is a classic method for integer-n division. Such division is frequency ...
The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...
A prescaler is an electronic counting circuit used to reduce a high frequency electrical signal to a lower frequency by integer division.The prescaler takes the basic timer clock frequency (which may be the CPU clock frequency or may be some higher or lower frequency) and divides it by some value before feeding it to the timer, according to how the prescaler register(s) are configured.
All PC compatibles operate the PIT at a clock rate of 105/88 = 1.193 18 MHz, 1 ⁄ 3 the NTSC colorburst frequency which comes from dividing the system clock (14.31818 MHz) by 12. This is a holdover of the very first CGA PCs – they derived all necessary frequencies from a single quartz crystal , and to make TV output possible, this oscillator ...
The ratio of resistances from one decade to the next is, surprisingly, not critical — by using R i+1 resistances slightly higher than R i / 5 and connecting a trimming resistor in parallel to the entire preceding decade in order to trim the effective resistance down to 2 × R i+1. In the above example, the second stage might use 3 kΩ ...
A parallel channel may have additional conductors for other signals, such as a clock signal to pace the flow of data, a signal to control the direction of data flow, and handshaking signals. Parallel communication is and always has been widely used within integrated circuits , in peripheral buses, and in memory devices such as RAM .
An orange that has been sliced into two halves. In mathematics, division by two or halving has also been called mediation or dimidiation. [1] The treatment of this as a different operation from multiplication and division by other numbers goes back to the ancient Egyptians, whose multiplication algorithm used division by two as one of its fundamental steps. [2]