In this paper a 4-bits counter, a 3-bits bidirectional counter, a 4-bits counter with a reset terminal, and a 4-bit counter with both set and reset terminals are designed using the proposed D-latch to demonstrate that these circuits function accurately in more complex circuits. According ...
In the above image, a basicAsynchronous counter used as decade counterconfiguration using 4JK Flip-Flopsand oneNAND gate74LS10D. The Asynchronous counter count upwards on each clock pulse starting from 0000 (BCD = 0) to 1001 (BCD = 9). Each JK flip-flop output provides binary digit, and...
A flip-flop of the D type capable of loading data asynchronously and comprising two latches, a master and a slave one, connected in series with each other, is characterized in that each of these comprises an interface and selection circuit for input signals transferable in either the synchronou...
PROBLEM TO BE SOLVED: To provide a flip-flop with asynchronous set/reset using the flip-flop with the asynchronous set and the flip-flop with the asynchronous reset. ;SOLUTION: This circuit is provided with the flip-flop circuit 3 with the asynchronous set, the flip-flop circuit 1 with the...
If the BE line is low initially, and the AE line is high, a positive going RSA signal will cause flip-flop 26 to toggle such that the BE line goes high and the AE line goes low. Counter 20 is therefore reset to a zero address by the SEND SYNC signal which is passed by data sele...
1) Using a ring counter 2) Using a straight binary counter What are advantages and disadvantages of each? –Twisted vs. non-twisted: Half the Flip-Flops Decode logic –Straight binary vs. ring Exponentially fewer flip-flops for the straight counter More logic ...
SingleD-TypeFlip-FlopWithAsynchronousClear 系统标签: asynchronousflopflipclearsingletype Q16C1DCLRCLKDR34ProductFolderSample&BuyTechnicalDocumentsTools&SoftwareSupport&CommunitySN74LVC1G175SCES560G–MARCH2004–REVISEDJUNE2015SN74LVC1G175SingleD-TypeFlip-FlopWithAsynchronousClear1Features3DescriptionThissingleD-type...
(i.e. the write address value of the write counter910and the read address value of the read counter920) are equal. The last operation flip-flop950with the label “last” stores a Boolean value that indicates the type of the last operation. A write sets the value to 1, whereas a read...
You are trying to implement a finite state machine, and, as in any FSM, the present state must be registered (i.e., stored into a flip-flop bank). This you are doing in the firstcasestatement because the assignments to present_state are governed by clock transitions (i.e., they are...
Once inside the FPGA I'd argue there is no advantage in using a greycode counter, providing a standard binary counter meets timing. To bring the signal onto the system clock domain I recommend clocking the incoming signal through 2 flip-flops to overcome any metastability, something y...