Ans:- Register is synchronous circuit thus all flip-flops are controlled by a common clock line.
There is four type of Register:
(i) Serial input, serial output (SISO)
(ii) Parallel input, serial output(PISO)
(iii) Serial input, parallel output(SIPO)
(iv) Parallel input, parallel output(PIPO)
Answered by HAFIJUR RAHMAN
Nowgong College,KKHSOU(Assam)India
In computer architecture, a processor register is a small amount of storage available on the CPU whose contents can be accessed more quickly than storage available elsewhere. Most, but not all, modern computer architectures operate on the principle of moving data from main memory into registers, operating on them, then moving the result back into main memory-a so-called load-store architecture. A common property of computer programs is locality of reference: the same values are often accessed repeatedly; and holding these frequently used values in registers improves program execution performance. Processor registers are at the top of the memory hierarchy, and provide the fastest way for a CPU to access data. The term is often used to refer only to the group of registers that are directly encoded as part of an instruction, as defined by the instruction set. More properly, these are called the "architectural registers". For instance, the x86 instruction set defines a set of eight 32-bit registers, but a CPU that implements the x86 instruction set will often contain many more registers than just these eight.
A GPR is a register which can hold EITHER data or instructions. Registers are dedicated memory storage areas inside the CPU itself and are used for carrying out immediate instructions, passing data, or receiving immediate results from a function.
the basic computer registers are the address register,program counter, direct register,instuction register,temporary register,accumulator,OUTR,INPR
There are two types of registers such as: a) General purpose registers b) Special purpose registers
Microprocessor consists of different types of registers. They special purpose registers, general purpose registers, address registers, floating point registers and constant registers.
UNIVAC LARC had 26 general purpose registers, but could be expanded to 99 registers, if required.
This varies dramatically from one computer architecture to another. It may be as few as one register to many hundreds, the registers may be general purpose or very specialized in purpose. It all depends on the decisions of the computer architect and the evolutionary history from the initial implementation of the architecture to the latest.
The registers in a CPU are organized according to their purpose. There are data registers and address registers. The address registers are in charge of pointing out where certain data stores are.
Cash register School Register -------------------- processor register User-accessible Registers Data registers Address registers Conditional registers General purpose registers Floating point registers Constant registers Special purpose registers Instruction registers Model-specific registers Control and status registers Memory buffer register Memory data register Memory address register Memory Type Range Registers Hardware registers
No, a personal computer is an example of a general-purpose computer. The computer in a VCR is designed for the specific purpose of operating the VCR.
general purpose registers are basically used to hold temporarily data and intermediately result. example: ax,bx,cx,dx each of 16 bits. whereas special purpose register are primely used for memory access. it is of two types : 1. segment register and 2. index register/ pointer
General purpose registers are called as scratch pad memories
The 8085 is an 8-bit computer, therefore the length of the general registers B, C, D, E, H, and L is 8 bits. Some registers, however, can be paired, specifically BC, DE, and HL, to hold and use 16 bit values for certain operations.
There are 6 general purpose Registers and Two special purpose registers: General purpose registers(8 bit basically) are B,C,D,E,H,L and SPECIAL Purpose resisters are STACK PONITER,PROGRAM COUNTER these two are 16 bit registers. If u want make general purpose registers as 16 bit registers, the combination is BC,DE,HL these are 16 bit pair registers
•It was the first general-purpose electronic computer.