what is the difference between shift register and counter?
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In a shift register, the input of element N is the output of element N-1, and all elements use the same clock. In a counter, the input of element N is the inverse of its output, and the clock of element N+1 is the output of element N.
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Counters and Timers in 8051 microcontroller contain two special function registers: TMOD (Timer Mode Register) and TCON (Timer Control Register), which are used for activating and configuring timers and counters. ... There are four modes to operate the timers.
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Asynchronous counters are sometimes called ripple counters because the data appears to “ripple” from the output of one flip-flop to the input of the next. They can be implemented using “divide-by-n” counter circuits.
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The main difference between cmp and sub is that cmp does not store the result of the subtract operation; it performs subtraction only to set the status flags. Similarly, two registers can be compared to see if they both have the same value.
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A register is most definitely hardware! It's a block of memory (made up of flip flops), and is typically eight bits in size. A register located inside a CPU--in comparison to other types of memory such as RAM--is very quickly and easily accessible to the hardware that actually operates on information.
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Design a Mod-5 synchronous counter using J-K Flip-Flops. Ans. Synchronous Counters: It means that all flip-flops are clocked concurrently. The clock pulses drive the clock input of each flip-flop together hence there is no propagation delay. Mod-5 Counter Synchronous Counter: This have five counter states.
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Fig. An electronic register is a form of memory that uses a series of flip-flops to store the individual bits of a binary word, such as a byte (8 bits) of data. The length of the stored binary word depends on the number of flip-flops that make up the register.
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Differences between Synchronous and Asynchronous Counter. Counters are of two types depending upon clock pulse applied. ... In synchronous counter, all flip flops are triggered with same clock simultaneously. In asynchronous counter, different flip flops are triggered with different clock, not simultaneously.
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The main difference between hardware and software interrupt is that a hardware interrupt is generated by an external device while a software interrupt is generated by an executing program. An interrupt is an event that occurs by a component of a device other than the CPU.
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Arithmetic shift is almost same as logical shift but they has some differences. ... Arithmetic shift perform multiplication and division operation, whereas Logical shift perform only multiplication operation. Arithmetic shift is used for signed interpretation, whereas Logical shift is used for unsigned interpretation.
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TCCR1A and TCCR1B are the two 8-bit control registers. These set up the clock prescale ratio, set the mode for the counter/timer and set the output control for the PWM pins. ... Each timer has 2 or 3 channels which control a dedicated pin if the relevant output mode is set and that pin is enabled as an output.
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The difference between shift keying and modulation is the type of signals that each one uses. Shift keying is used for digital signals that use discrete values. Modulation is used for analog signals and depends on the information being sent.
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In a synchronous counter, all the flip-flops are triggered by the same clock signal whereas in an asynchronous counter, flip-flops are triggered with different clock signals. Unlike an asynchronous counter, the state of the output bits changes simultaneously in a synchronous counter, without any ripple.
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One flip-flop acts as the “Master” circuit, which triggers on the leading edge of the clock pulse while the other acts as the “Slave” circuit, which triggers on the falling edge of the clock pulse.
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The main difference between edge and level triggering is that in edge triggering, the output of the sequential circuit changes during the high voltage period or low voltage period while, in level triggering, the output of the sequential circuit changes during transits from the high voltage to low voltage or low voltage ...
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The biggest difference for me is the location of the backtick key, shown in pink. ⌘ + ` is the key combination to switch between windows within the same app. On the UK keyboard this key is too close to the shift key, and means left shift is tiny. On the US keyboard it is in an ideal location, above the tab key.
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Logical shift treats the number as a bunch of bits, and shifts in zeros. ... Arithmetic shift treats the number as a signed integer (in 2s complement), and "retains" the topmost bit, shifting in zeros if the topmost bit was 0, and ones if it was one.