Table of Contents
What is the function of IC 7447?
7447 or 74LS47 decodes BCD into 7 Segments. It accepts a binary coded decimal or BCD Values as input and decoded into a pattern that drives a 7-segment for displaying digits 0 to 9, so its name is BCD to 7 segment driver or decoder IC. Its input is 4 lines of BCD data and generates complements as output.
What is the function of IC pin?
The pin configuration of this IC is shown below. Pin-1 is a GND pin which is used to supply a zero voltage to the IC. Pin-2 is a trigger pin which is used to convert the FF from set to RST (reset). The output of the timer depends on the amplitude of the external trigger pulse that is applied to the trigger pin.
What is IC Rbo?
RBO = Ripple Blanking Output. It is used to Blank out the leading zeros and supposed to make it look more intelligent.
What is the internal structure of 7483 IC?
IC 7483 is a 4 bit parallel adder which consists of four interconnected full adders along with the look ahead carry circuit. The pin diagram of IC 7483 is shown above. It is a 16pin IC. The inputs to the IC are A, B and Cin0 while outputs are S and Cout3.
Why the pin LT Rbo RBI are used in decoder?
RBI is RIPPLE BLANKING INPUT is used in multi-digit display and should be connected to the RBO of the previous digit (the digit to the left). In this way, you may avoid showing trailing “0” if not needed as you do in manual number writing.
What is the function of the pin No 5 of timer IC 555?
Pin 5 is the control pin. In most 555 timer circuits, this pin is simply connected to ground, usually through a small capacitor, about 0.01 µF capacitor. This capacitor serves to level out any fluctuations in the power supply voltage that might affect the operation of the timer.
What is the function of ic7447 pins 4 and 3?
Pin 4 is BI/RBO- blanking input or ripple blanking output. BI/RBI is a wired AND logic serves as blanking input or ripple blanking IC7447 is BCD to 7 segment decoder & display driver. It is available in 16 pin DIP package. Pin number 3 is display test (lamp test) function which is active low.
What is the function of icic7447 display driver?
IC7447 is BCD to 7 segment decoder & display driver. It is available in 16 pin DIP package. Pin number 3 is display test (lamp test) function which is active low. When pin number 3 input is low, irrespective of other input pin signals, all the segment outputs a,b,c,d,e,f & g are low & all segments of the display will glow.
What is the function of the 7447A IC?
According to the 7447 datasheet the 7446A and 7447A ICs feature active-low outputs designed for driving common-anode LEDs or incandescent indicators directly. All of the circuits have full ripple-blanking input/output controls and a lamp test input. Segment identification and resultant displays are shown on a following page. 7447 pin configuration
What is the function of INBI/RBI input pin 5?
BI/RBI is a wired AND logic serves as blanking input or ripple blanking output. For normal display operation, this pin is held high or kept open. If this input pin is made low, all the segment output a,b,c,d,e,f &g output become high and all the segments are blanked off (no display). Pin 5 is RBI input pin.