AND logical operator

CPU (central processing unit) the part of a computer that does mathematical and logical operations. 

IF(e)st—Logical if, where e is a logical expression (see Table 1-26 for relational and logical operators) and st is any executable statement except DO, IF, ELSEIF, ENDIF, or END. For example,... 

The primitive functions These comprise the various mathematical and logical operations that the program may need. They will usually include mathematical functions such as + -, /, and, logical functions, programming constructs, such as loops, and possibly other mathematical functions, such as trigonometric, exponential, and power functions. 

Now we step towards logic operations, which require more than one input The AND operation has a significance that stretches beyond electronics or chemistry. It is the AND logic operation among... 

A host of gadgets and software are available to perform a variety of computations and logical operations with control signals. For example, adders, multipliers, dividers, low selectors, high selectors, high limiters, low limiters, and square-root extractors can all be implemented in both analog and computer systems. They are widely used in ratio control, in computed variable control, in feedforward control, and in override control. These will be discussed in the next chapter. 

Computer A functional unit that can perform substantial computations, including numerous arithmetic operations and logical operations without human intervention. 

The CENTRAL PROCESSING UNIT (CPU) decodes and executes the instructions of a computer program. It has circuits that can perform arithmetic and logical operations, e.g., add two numbers or compare them for equality. 

On average, a typical computational process can keep four of the arithmetic functional units plus several memory and I/O units busy concurrently, allowing a single AFP to achieve an average computational rate of about 200 to 250 million 16-bit arithmetic and logical operations per second. 

Reversibility of Droplet Trains and Logic Operations on Droplets... 

We conclude by discussing a possible application of quantum logic in the realm of atomic physics. This application has the advantage of being useful with a relatively small number of ions and logic operations. 

The arithmetic registers are high-speed electronic accumulators (ACs). That is, each is a set of n electronic two-state devices (like flip-flops—see Sec. 23.2), which can be used to accumulate intermediate results of binary arithmetic involving -bit data. Nearly all the arithmetic and logical operations of the CPU are carried out in the arithmetic registers. Binary information can be transferred to or from memory and the arithmetic registers by the execution of appropriate instructions. 

The physical components of a computer form the hardware. Hardware includes the disk and hard drives, clocks, memory units, and registers for arithmetic and logical operations. Programs and instructions for the computer, including the tapes and disks for their storage, represent the software. 

C and C++ Programming Language TABLE III Arithmetical and Logical Operators... 

C is known as an operator-rich language for good reason. It has many operators, and they can be used in ways that are not allowed in tamer languages, such as Pascal. The basic arithmetical and logical operators, detailed in Table III, are present in most programming languages. The only unusual operators in Table III are increment and decrement. For ordinary numeric variables, increment or decrement is simply addition or subtraction of one. Thus the expression... 

ALU (arithmetic/logic unit) The part of the central processor of a computer in which simple arithmetic and logical operations are performed electronically. For example, the ALU can add, subtract, multiply, or compare two numbers, or negate a number. 

Whether covalently bound or noncovalently assembled, supramolecular systems can be programmed to perform simple computing operations. In most cases, supramolecular interactions between the device and the input species are crucial. The algorithms are simple, that is, to perform the Boolean AND logic operation or to add two very small numbers. Nevertheless, these ideas have been developed within molecules to the extent that a population of small objects can be individually identified or a game like tic-tac-toe can be played successfully against a human opponent. " In most cases, the program is frozen within the molecule. 

---