Registers Digital Logic and Computer Design by Ravinder Nath Rajotiya - October 25, 2023October 25, 20230 Introduction We are all familiar with the word “register”, yes, the same which we use in our schools days. That register is a place we write our day-to-day notes, and these notes get stored permanently in this register. So we define such register as a group of pages used to store characters. This register come in various size, the total capacity in terms of number of characters is calculated as: Capacity = (number of pages) x (number of lines) x (number of characters per line) Register: In computers also information is stored in registers. A register is a collection of storage elements that are used to store or process the binary information. The memory elements used are the flip-flops. Types of registers: a) The storage registers: The
Flip-Flop and Latches Digital Logic and Computer Design by Ravinder Nath Rajotiya - October 9, 2023October 9, 20230 Introduction The second type of digital circuitry are the sequential circuits. These circuitry are formed as a combination of combinational and the memory element. The memory element stores the state of the circuit. We start discussing on Latches and Flip-Flops. Latches Storage elements that operate with signal levels (i.e. level triggered of signal input) are termed as latches. A latch is a bi-stable element having two states Q and Q’. It is a sequential circuit that will continuously change its state as soon as the input changes without waiting for the clock signal. A latch usually has an enable input. When the enable is active the output changes as soon as there is a change in the inputs. Latches are not of practical