FAST CARRY CIRCUIT Russian patent published in 2000 - IPC

Abstract RU 2155371 C1

FIELD: electronics, in particular, binary adders. SUBSTANCE: goal of invention is achieved by design of first to (n-1) carry detection signal generators, which execute function of the type AB(C+D)+CD+EF. First to (n-2) carry transmission signal generators are designed as 2OR-2OR-2OR-3AND gates. (n-1) carry transmission signal generators is designed as is designed using 2OR-2OR-2AND gate. Inputs of each pair of OR junctions of carry transmission signal generators are connected to inputs of pair bits of added numbers in ascending order starting from next number after two lowermost bits. This results in possibility to increase circuit bit length without increase in number of circuits in critical carry signal transmission path, leading to decreased speed of device operations. EFFECT: increased bit length, increased speed. 3 cl, 4 dwg

Similar patents RU2155371C1

Title Year Author Number
RAPID CARRY CIRCUIT 1999
  • Ignat'Ev S.M.
  • Ivanov Ju.P.
RU2149443C1
HIGH-SPEED CARRY ADDING DEVICE 2000
  • Ignat'Ev S.M.
  • Ivanov Ju.P.
RU2198421C2
GENERATOR OF WRITE PULSES FOR MEMORY UNIT 1994
  • Ignat'Ev S.M.
  • Podlesnyj A.V.
RU2097843C1
MEMORY UNIT 1995
  • Ignat'Ev S.M.
RU2101785C1
MULTIBIT CONTROLLED FREQUENCY SCALER 1996
  • Ostrovskij V.A.
RU2119248C1
DURATION-TO-CODE CONVERTER 2001
  • Ignat'Ev S.M.
RU2210097C2
BASE MATRIX CRYSTAL OF ON-LINE STORAGE 1992
  • Ignat'Ev S.M.
RU2089012C1
MULTICHANNEL TELEMETRIC SEISMIC PROSPECTING SYSTEM 1994
  • Petrov V.B.
RU2107312C1
CMOS GATE LEVEL CONVERTER 1994
  • Ignat'Ev S.M.
  • Savenkov V.N.
  • Temkin G.S.
RU2097914C1
STANDARD VOLTAGE SOURCE 1993
  • Ignat'Ev S.M.
RU2076351C1

RU 2 155 371 C1

Authors

Ignat'Ev S.M.

Ivanov Ju.P.

Dates

2000-08-27Published

1999-01-14Filed