Title :
Fast computing using signed digit number system
Author :
Rani, Reena ; Sharma, Neelam ; Singh, L.K.
Author_Institution :
Departmet of Electron.&Commun., B.S.A. Coll. of Eng. & Technol., Mathura, India
Abstract :
The limitation of speed of modern computers in performing the arithmetic operations such as addition, subtraction and multiplication suffer from carry propagation delay. Carry free arithmetic operations can be achieved using a higher radix number system such as Quaternary Signed Digit (QSD). In QSD, each digit can be represented by a number from -3 to 3. Carry free addition and other operations on a large number of digits such as 64, 128, or more can be implemented with constant delay and less complexity. The design of these circuits is carried out using EDA tools. The designs are simulated and synthesized using VHDL software, modelsim software is used for simulation, Xilinx project navigator and Leonardo Spectrum for synthesis.
Keywords :
carry logic; hardware description languages; logic design; EDA tools; Leonardo spectrum; VHDL software; Xilinx project navigator; carry free addition; carry free arithmetic operation; carry propagation delay; constant delay; fast computing; modelsim software; quaternary signed digit; radix number system; signed digit number system; Adders; Automatic control; Circuit simulation; Circuit synthesis; Communication system control; Computational modeling; Control systems; Delay; Digital arithmetic; Very large scale integration; Carry free addition; Fast computing; QSD (Quaternary Signed Digit); VHDL; VLSI;
Conference_Titel :
Control, Automation, Communication and Energy Conservation, 2009. INCACEC 2009. 2009 International Conference on
Conference_Location :
Perundurai, Tamilnadu
Print_ISBN :
978-1-4244-4789-3
