Decoder
Nand Gate Decoder
Decoder
Multiplexer
Quadruple MUX
REGISTERS A  register  is  a  group  of  flip-flops  capable  of  storing  one  bit  of  information. Register  consists  ...
It  shows  how  a  register  constructed  with  four  D flip-flops  . The  common  clock  input  triggers  all  flip-flops...
REGISTER  WITH  PARALLEL  LOAD <ul><li>The  transfer  of  new  information  into  a  register  is  referred  to  as  loadi...
4- bit  register  with  parallel  load
SHIFT  REGISTERS <ul><li>In digital circuits a  shift register   is a group of flip flops set up in a linear fashion which...
<ul><li>The  serial  input  determines  what  goes  into  the  leftmost  position  during  the  shift. </li></ul><ul><li>T...
Bidirectional  Shift  Register  with  Parallel  Load <ul><li>A  register  capable  of  shifting  in  one  direction  only ...
S1  S0  Operation ------------------------------------------------ 0 0  Preserve Output 0 1  Shift right 1 0  Shift left 1...
BINARY  COUNTERS <ul><li>A  register  that  goes  through a  predetermined  sequence  of  states  upon  the  application  ...
<ul><li>Synchronous  binary counter  have  a  regular  pattern can be  seen  from  this  figure. </li></ul><ul><li>T flip-...
Binary  Counter  with  Parallel  Load <ul><li>Counters with  parallel  load  are  very  useful  in  the  design  of  digit...
4-bit  binary  counter  with  parallel  load  &  synchronous  clear
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Ch2

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Sanjeev Patel 4x

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Ch2

  1. 2. Decoder
  2. 3. Nand Gate Decoder
  3. 4. Decoder
  4. 5. Multiplexer
  5. 6. Quadruple MUX
  6. 7. REGISTERS A register is a group of flip-flops capable of storing one bit of information. Register consists of a group of flip-flops & gates that effect their transition. The flip-flops holds the binary information & the gate control when & how new information is transferred into the register. The simplest register is that which only contains flip-flops , with no external gates.
  7. 8. It shows how a register constructed with four D flip-flops . The common clock input triggers all flip-flops . 4 - bit register
  8. 9. REGISTER WITH PARALLEL LOAD <ul><li>The transfer of new information into a register is referred to as loading the register . </li></ul><ul><li>If all the bits of the register are loaded simultaneously with a common clock pulse, loading is done in parallel. </li></ul><ul><li>LOAD INPUT - It determines whether the next clock pulse will accept new information or leave the information in the register intact . </li></ul>
  9. 10. 4- bit register with parallel load
  10. 11. SHIFT REGISTERS <ul><li>In digital circuits a shift register is a group of flip flops set up in a linear fashion which have their inputs and outputs connected together in such a way that the data are shifted down the line when the circuit is activated. </li></ul><ul><li>The simplest shift register is one that uses only flip-flops. </li></ul>
  11. 12. <ul><li>The serial input determines what goes into the leftmost position during the shift. </li></ul><ul><li>The serial output is taken from the output of the rightmost flip-flop. </li></ul><ul><li>The clock is common to all flip-flops. </li></ul>Shift register
  12. 13. Bidirectional Shift Register with Parallel Load <ul><li>A register capable of shifting in one direction only is called unidirectional shift register. </li></ul><ul><li>A register that can shift in both directions is called bidirectional shift register. </li></ul><ul><li>The most general shift register has all the capabilities like - input for clock pulse, shift-right operation, shift-left operation, parallel load operation, n parallel output lines, a control state. </li></ul>
  13. 14. S1 S0 Operation ------------------------------------------------ 0 0 Preserve Output 0 1 Shift right 1 0 Shift left 1 1 Load BIDIRECTIONAL SHIFT REGISTER WITH PARALLEL LOAD
  14. 15. BINARY COUNTERS <ul><li>A register that goes through a predetermined sequence of states upon the application of input pulses is called a counter . </li></ul><ul><li>A counter that follows the binary number sequence is called binary counter. The main type of flip-flops used in counters are J-K flip-flops or T flip-flop. </li></ul>
  15. 16. <ul><li>Synchronous binary counter have a regular pattern can be seen from this figure. </li></ul><ul><li>T flip-flops are used because set/reset ([1,0] [0,1]) functions are seldom used. Only the &quot;do nothing&quot; and toggle ([0,0] [1,1]) functions are used. Logic gates are used to decide when to toggle which outputs. </li></ul>This is an example of a 4-bit synchronous binary counter, implemented using J-K flip-flops and AND gates
  16. 17. Binary Counter with Parallel Load <ul><li>Counters with parallel load are very useful in the design of digital computers. Logic diagram of a binary counter that has a parallel load capablity & can also be cleared to 0 synchronous with the clock. </li></ul><ul><li>The count(increment) operation adds one to the content of the register. </li></ul>
  17. 18. 4-bit binary counter with parallel load & synchronous clear

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