Power consumption and delay are two important considerations for VLSI systems which depend on various critical design parameters. The objective of this project is to reduce the power and to reduce the delay which increases the speed. The purpose of this paper is the design and implementation of an Arithmetic Logic Unit (ALU) using area optimizing techniques such as Gate Diffusion Input (GDI). I...

Public key cryptosystems depend on complex and time consuming arithmetic operations. Public key cryptosystems require modular operations over large numbers or finite fields. Researchers are working on improving the performance of asymmetric cryptosystems while maintaining the security of the cryptographic algorithms. Parallel computing is the most promising solution to improve the computing pow...

The strength of public-key cryptography depends on the degree of difficulty of a private key to be determined from its corresponding public key. Such a Key can be generated from computationally high radix arithmetic operations like modular exponentiation with very large integer values. To perform this modular exponentiation, different multiplication algorithms like Montgomery algorithm, Karatsu...

In the recent high speed processor, floating point ALU (FP ALU) is one of the important units to perform the arithmetic and logical functions of the floating point number. Floating point multiplication is one of the arithmetic operations that take more computational time and when implemented in hardware, it requires more area due to the large number of component. However the advantage of implem...

In this paper, we present a new approach to designing optical digital arithmetic systems. We present new arithmetic algorithms based on a modified signed -digit number representation. New Signed -digit symbolic substitution rules are introduced to implement them. These signed -digit arithmetic algorithms are well suited for optical implementation because, of the confined carry propagation withi...

The paper begins with an axiomatic definition of rounded arithmetic. The concepts of rounding and of rounded arithmetic operations are defined in an axiomatic manner fully independent of special data formats and encodings. Basic properties of floating-point and interval arithmetic can directly be derived from this abstract model. Interval operations are defined as set operations for elements of...

A hardware unit for interval arithmetic (including division by an interval that contains zero) is described in this paper. After a brief introduction an instruction set for interval arithmetic is defined which is attractive from the mathematical point of view. These instructions consist of the basic arithmetic operations and comparisons for intervals including the relevant lattice operations. T...

Image compression is one of the method which are widely used in areas such as medical, automotive, consumer and military. Discrete wavelet transforms is the most widely used transformation technique that is adopted for image compression. DWT is always high due to large number of arithmetic operations it is highly complex. In this work a modified Distributive Arithmetic based DWT architecture is...

This chapter presents the design and analysis of variable-precision, interval arithmetic processors. The processors give the user the ability to specify the precision of the computation, determine the accuracy of the results, and recompute inaccurate results with higher precision. The processors support a wide variety of arithmetic operations on variable-precision oating point numbers and inter...

The integration of control micro-electronics within mechanical mini and micro-systems is a current trend in the design of high-performance mechatronic systems. However, implementing controllers of higher complexity, while still decreasing the size of the system implies difficult demands on the control electronics. In order to maintain a high computational speed and to reduce controller size, im...