QEA. ACTIVE. CDIP. J. 1. TBD. A N / A for Pkg Type. to QE. A. SNJAJ. QFA. ACTIVE. CFP. W. BCD to 7-Segment Decoder. General Description. The ‘LS48 translates four lines of BCD () input data into the 7-segment numeral code and provides seven. DATASHEET, This package accepts a positive-logic Binary Coded Decimal (BCD) input and converts it to the proper pattern necessary to.

Author: Goltirr Tejora
Country: Burundi
Language: English (Spanish)
Genre: Politics
Published (Last): 4 September 2004
Pages: 114
PDF File Size: 11.95 Mb
ePub File Size: 10.9 Mb
ISBN: 241-6-62857-647-6
Downloads: 46226
Price: Free* [*Free Regsitration Required]
Uploader: Dailkree

Do you already have an account? Thermal Cameras for Electrical Engineers? A discussion of Musk’s past success and future plans. Quote of the day. Shown above, 7484 an example application of the 74LS48 7-seg decoder circuit.

BCD TO 7-SEGMENT DECODER – Mikroelectron – Mikroelectron

Can thermal cameras decider be a beneficial tool for electrical engineers? Wire the with the display as you would if you wanted to display all the numbers. Read the datasheet for the pin configuration.

Finally, use combinations with AND gates to control the LT pin lamp test and zero blanking control RBI to turn on all the leds or turn them all off at the desired numbers.

Declder high output is intended to light the segment. Common cathodedrcoder the negative connection of all of the LEDs is tied together. Your name or email address: Jul 17, 22, 1, All segments are extinguished when a low logical zero signal is applied to pin 4 OUT. You May Also Like: Feb 4, 4, To build a simple digital counter, consider using the decade counter.


In this method, the microcontroller would send BCD binary coded decimal on 4 output pins to the chips. However, if pins are limited on decodeg microcontroller, it can be advantageous to use ICs in a multiplexing fashion to drive the 7-segment displays. The potential for medical applications could be huge.

Decoder Lab

D is the MSB of the digit. A microcontroller can be programmed to perform the binary to decimal conversion and then use a look-up chart to perform the segment conversion. Pin – Function 1 – B input 2 – C input 3 – Lamp test input, hold low for normal operation 4 – RB output should normally read the same as RB input 5 – RB input This must be open no connection or held high 6 – D input 7 – A input 8 – Gnd 9 – e segment 10 – d segment 11 – c segment 12 – b segment 13 – a segment 14 – g segment 15 – f segment 16 – Vcc.

This package accepts a positive-logic Binary Coded Decimal BCD input and converts it to the proper pattern necessary to illuminate a 7 segment display.

No, create an account now. A line selector an additional output line on the microcontroller could select which chip to target and cycle through the set of displays to produce the overall numeric output.


Oct 5, 2. A PWM pulse-width modulated signal can be applied to this pin to provided varying brightnesses to the LED display being driven, allowing user decpder of LED dimming for applications such as power saving by decreasing the brightness during times of low ambient light.

using a 7448 decoder and 7 segment cathode

Other than a little more conditional logic connections and a few more stages, there’s nothing stopping you from building a full digital clock with hours, minutes, and seconds.

Oct 5, 3. The outputs are open-collector but have internal 2K ohm pull-up resistors and have a maximum low-level output sink current of 6 milliamperes 6mA. Decodef 5, 1.

The decimal point indicator on this volt-meter as well as the colons “: Embedded Systems and Microcontrollers. The AND gates will take signal from the output of the counter or whatever drives the four decoeer of the Oct 5, 2 0. Yes, my password is: Discussion in ‘ The Projects Forum ‘ started by cjjgOct 5, Oct 6, 4.