The 74ls163 counter
okNORTHUMBRIA UNIVERSITY
SCHOOL OF ENGINEERING AND TECHNOLOGY
Introduction
The following experiment involves a detailed investigation into the operation of the 555 timer as an astable and the 74LS163 synchronous counter
access to various capacitors
555 timer
Background
t1 = 0.7(R1 + R2)C
t2 = 0.7R2C
Change the values, and observe the outputs.
Compare with expected output from calculation.
KEEP THE 1HZ CLOCK CONNECTED FOR THE NEXT SECTION
The 74LS163 Counter
74LS163 – Synchronous 4-bit counter
/CLR, ENP,ENT, /LOAD,A,B,C,D, +5V
QA,QB,QC,QD,RC0 LEDS
Build the circuit and observe the outputs of the counters on LEDs.
Draw the waveforms of the outputs in your logbook and comment on all results.
