Digital Electronics Lab , Theorems & A.C. Bridges

Study of Presettable BCD Decade Up / Down Counter using I.C.-74190, Model – UD – 190


  • Circuit  is  engraved  or  screen  printed  on  a  painted aluminum  sheet  to  facilities  better  or  clear  under  standing.
  • A  complete  working  manual  containing  theory,  circuit  details  and  operating  procedure  is  supplied  with  the  experimental  board.
  • Stackable  type  connecting  leads  are  supplied  with  the board  for  easy  and  perfect  inter  connections.
  • Continuously  variable,  overloading  and  short  circuit  protected  d.c.  regulated  power  supply  of  0 – 5, Volts.
  • Fixed  output  d.c.  regulated  Power  Supply  of  5,  Volts.
  • Builtin   Pulser   LEDs,  data  switches


  1. To  study  of   74190 counter  operation,  Model – UD – 190.


  1. Board  is  self  sufficient.

There may be any change in specification due to continuous R & D without notice.