Contents
What are the inputs and outputs of a register?
A register stores a single multi-bit value, which is displayed in hexadecimal within its rectangle, and is emitted on its Q output. When the clock input (indicated by a triangle on the south edge) indicates so, the value stored in the register changes to the value of the D input at that instant.
Is a register input or output?
The instruction read from memory is placed in the Instruction register (IR). The Temporary Register (TR) is used for holding the temporary data during the processing. The Input Registers (IR) holds the input characters given by the user. The Output Registers (OR) holds the output after processing the input data.
Which register is used to read input from the port?
LATx. LATx are the port latch registers. A write to a latch register is same as sending data to the port register PORTx. A read from the latch register, however, reads the data present at the output latch of the port pin, and this may not be same as the actual state of the port pin.
Why instruction register is 16 bit?
This address is often a part of the instruction. For example, with a 16-bit address register, the address bus has 16 bits to address RAM and ROM. With 16 bits, a maximum of 216 = 65,536 words can be addressed. There are usually two other registers, the flag and stack pointer registers.
What are the three control inputs for register?
Five registers have three control inputs: LD (load), INR (increment) and CLR (clear).
What is output register definition?
[′in‚pu̇t ′au̇t‚pu̇t ‚rėj·ə·stər] (computer science) Computer register that provides the transfer of information from inputs to the central computer, or from it to output equipment.
What is the size of input register?
The Input Register INPR consists of 8-bits and hold alphanumeric input information. The serial information from the input device is shifted into input of 8-bit register INPR.
What is input and output port?
(1) (Input/Output port) An I/O port is a socket on a computer that a cable is plugged into. The port connects the CPU to a peripheral device via a hardware interface or to the network via a network interface. (2) (Input/Output port) In a PC, an I/O port is an address used to transfer data.
Which is 16-bit register?
16-bit microcomputers are computers in which 16-bit microprocessors were the norm. A 16-bit register can store 216 different values. The range of integer values that can be stored in 16 bits depends on the integer representation used.
Which is the shift register for serial output?
Serial-In Serial-Out Shift Register (SISO) – The shift register, which allows serial input (one bit after the other through a single data line) and produces a serial output is known as Serial-In Serial-Out shift register.
Which is the shift register in parallel out?
Serial-In Parallel-Out shift Register (SIPO) – The shift register, which allows serial input (one bit after the other through a single data line) and produces a parallel output is known as Serial-In Parallel-Out shift register. The logic circuit given below shows a serial-in-parallel-out shift register.
Which is the shift register in a logic circuit?
The shift register, which allows parallel input (data is given separately to each flip flop and in a simultaneous manner) and also produces a parallel output is known as Parallel-In parallel-Out shift register. The logic circuit given below shows a parallel-in-parallel-out shift register.
How is the output of a shift register connected to a flip flop?
The output from each flip-Flop is connected to the D input of the flip-flop at its right. Shift registers hold the data in their memory which is moved or “shifted” to their required positions on each clock pulse. Each clock pulse shifts the contents of the register one bit position to either the left or the right.