Register is a type of computer memory storage unit that operates at high speed. It is used by the Central Processing Unit (CPU) of a computer to perform its arithmetic calculations and logical comparisons. The CPU moves data and executable instructions into the registers to perform its function and then moves the final result back into main memory for storage. It also stores intermediate results and special instructions in registers to make them accessible faster.
There are many types of registers in a computer system including general purpose registers, floating point registers, and vector registers. The function of each is slightly different but all provide a critical part of the overall program execution process. Registers help to reduce the need for a CPU to access main memory and improve overall performance.
A register can also be an authoritative list of one specific kind of information. For example, a public company may have to maintain a contract register to keep an account of all agreements between it and its shareholders. Register can be a legal term as well, such as in the case of registering a trademark with the government.
The word register is often confused with the term style, but this concept relates more to written text than to computer hardware. The style of a piece of writing can include its choice of vocabulary, tone, use of grammar and sentence structure as well as its layout. All of these factors come into play when considering register and it is important to consider how these elements will affect the intended audience of a particular piece of work.
In computing, a register is an integral part of the central processor unit. The CPU uses them to store data and executable instructions during its arithmetic calculations and LOGICAL COMPARISONS. The processor moves data into and out of the registers for high speed data manipulation and to perform its arithmetic operations. The registers are then stored in the memory for future reference and to be retrieved at an even higher speed.
Computer registers are tiny and very fast data save locations in a computer. They can hold either data or instructions and the data in a register is easily accessed by the CPU and other components of the computer for fast and efficient DATA TRANSFER. Registers also serve as a buffer for CPU, reducing the need for it to constantly access slower main memory locations and improving overall program performance.
Register is also the name of the component in a computer that handles transactions at a cash register or point of sale terminal. Typically, these devices allow users to add items to the transaction and then print out a receipt for the customer that includes all the details of the purchase. In addition, the register can be used to apply any discounts or coupons and flag taxable or non-taxable items. Finally, a register can be used to record payment and return change. It is also possible to log out of the register at the end of a shift for security purposes.