To study, understand and perform experiments on timers and counters
                     In case of retentive timer, the accumulated value
                  
                  
                  
                
                  
                     Which of the following counters counts input pulses in decreasing manner?
                  
                  
                  
                
                  
                    OND stands for On Delay timer.
                  
                  
                  
                
                  
                    Which of the following is an example for On Delay Timer application?
                  
                  
                  
                
                  
                    Which type of pulse is used for off delay timer?