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LECT#8 - EE200 DIGITAL LOGIC CIRCUIT DESIGN Class Notes...

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EE EE200 200 200(class class class 14-2&3) Prof. M.M. Dawoud Prof. M.M. Dawoud 136 EE200 DIGITAL LOGIC CIRCUIT DESIGN Class Notes CLASS 14-2&3 The material covered in this class will be as follows: Universal shift register. Ripple counters. Binary ripple counter. BCD (Decimal) ripple counter. Synchronous counters. Binary counter. Up-down counter. Universal Shift Register Registers are available in integrated circuit form that can function as shift register in either direction (right or left), register with parallel load. Data can also be kept in the register while the clock pulses are applied. This universal register has the following capabilities: 1. A clear (reset) input. 2. A clock input. 3. A shift right control. 4. A shift left control. 5. A parallel load control. 6. A control input to keep the contents of the register unchanged while clock pulses are applied. A universal shift register that has the previous capabilities is constructed using D flip flops and multiplexers. The construction of a 4-bit register is shown in the following diagram.
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