Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Converting numbers between binary and another base










Image Number 2 for United States Patent #4792793.

Dedicated convert hardware is disclosed for performing bidirectional conversions of numbers between binary and another base b (illustratively decimal) for use in a data processing system. The dedicated convert hardware comprises a special purpose multiply-and-add unit and a convert register. The output of the multiply-and-add unit is coupled to the input of the convert register, and the output of the convert register is recycled to the inputs of the multiply-and-add unit. The multiply-and-add unit is hardwired to multiply the input by b and concurrently add the value at a separate digit input. Means are also provided for initializing the convert register with zero or with any desired number. The convert hardware is operated to convert a number from radix-b to binary by first initializing the convert register to zero and then iteratively clocking the multiply-and-add unit output into the convert register while presenting to the digit input of the multiply-and-add unit successively high- to low-order digits of the radix-b number. The convert hardware is operated to convert a binary number to radix-b by first initializing the convert register with the fractional part of a product N*b.sup.-m, where N is the binary number and m is an integer greater than zero, and then repetitively clocking the output of the multiply-and-add unit into the convert register while the digit input of the multiply-and-add unit is held at zero. The integer part of each successive multiplication constitutes the successive radix-b digits.








 
 
  Recently Added Patents
Cellulose derivative and hydrogel thereof
Dental plier
Test method for inspection device, particularly for label seating inspection device
Apparatus and method for categorizing services using canonical service descriptions
Bath
Configurable logic cells
Pyridazine compounds for controlling invertebrate pests
  Randomly Featured Patents
Shut-off valve
Apparatus for carrying tool on coil tubing with shifting sub
Weather prediction system
Method and apparatus for optimizing engine operation
Dual track ladder with brake mechanism that is automatically applied to the upper tracks to hold the ladder in place during use
Seam for impenetrable material
Semiconductor integrated circuit device, storage medium on which cell library is stored and designing method for semiconductor integrated circuit
Visual calibrator for color halftone imaging
Electric drum stroke counting machine
Polymerization of 1,3-cyclodiene with vinylaromatic hydrocarbon