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ScienTECH DB15 Operating Manual

Bcd to seven segments
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BCD to Seven Segments
Decoder
DB15
Operating Manual
Ver.1.1
An ISO 9001 : 2000 company
94-101, Electronic Complex Pardesipura,
Indore- 452010, India
Tel : 91-731- 2570301/02, 4211100
Fax: 91- 731- 2555643
e mail : info@scientech.bz
Website : www.scientech.bz
Toll free : 1800-103-5050

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Summary of Contents for ScienTECH DB15

  • Page 1 BCD to Seven Segments Decoder DB15 Operating Manual Ver.1.1 An ISO 9001 : 2000 company 94-101, Electronic Complex Pardesipura, Indore- 452010, India Tel : 91-731- 2570301/02, 4211100 Fax: 91- 731- 2555643 e mail : info@scientech.bz Website : www.scientech.bz Toll free : 1800-103-5050...
  • Page 2 DB14 Scientech Technologies Pvt. Ltd.

  • Page 3: Table Of Contents

    RoHS Directive concerns with the restrictive use of Hazardous substances (Pb, Cd, Cr, Hg, Br compounds) in electric and electronic equipments. Scientech products are “Lead Free” and “Environment Friendly”. It is mandatory that service engineers use lead free solder wire and use the soldering irons upto (25 W) that reach a temperature of 450°C at the tip as the...

  • Page 4: Introduction

    DB14 Introduction DB15 is a compact, ready to use BCD to 7 Segment Decoder experiment board. This experiment board has been designed to study BCD to 7 Segment decoder using IC74LS47. The Experiment board has inbuilt common anode display to study functionality of 74LS47.

  • Page 5: Theory

    HIGH voltages. In a common anode display, the anodes of all the LEDs are joined together and the individual segments are illuminated by connecting to a Low voltage. The figure 1, figure 2 shows the two displays. Common Cathode Figure 1 Common Anode Figure 2 Scientech Technologies Pvt. Ltd.
  • Page 6 Note : When ripple blanking input RBI and BCD inputs are at a low level with the lamp test input high, all segment outputs go off and the ripple blanking output RBO goes to low level. Scientech Technologies Pvt. Ltd.

  • Page 7: Experiment

    Objective : Study of BCD to 7 Segment Decoder using IC 74LS47 Equipments Needed : Digital board DB15. DC Power Supply +5V from external source or ST2611 Digital Lab. Digital Multimeter or Digital Lab ST2611. Logic Diagram & Truth Table : (Logic 1 = +5V &...
  • Page 8 DB14 Truth Table Figure 5 Scientech Technologies Pvt. Ltd.
  • Page 9 DB14 Procedure : • Connect +5V and ground to their indicated position on DB15 experiment board from external DC Power Supply or from DC power block of Digital Lab ST2611. • Connect BCD inputs to pins A0, A1, A2 A3 of IC 74LS47 as shown in logic diagram as per truth table from 8 bits data switches of ST2611 or from external source.

  • Page 10: Data Sheet

    DB14 Data Sheet Pinout Diagram (Pin 16 = V = +5V) : A, B, C, D BCD Inputs Ripple-Blanking Input or Lamp-Test Input Blanking Input or Ripple-Blanking Output Outputs Numerical Designations – Resultant Displays Scientech Technologies Pvt. Ltd.

  • Page 11: Truth Table

    DB14 Logic diagram of IC : Truth Table Scientech Technologies Pvt. Ltd.

  • Page 12: Warranty

    The repair work will be carried out, provided the product is dispatched securely packed and insured. The transportation charges shall be borne by the customer. For any Technical Problem Please Contact us at service@scientech.bz List of Accessories Patch Cord of 1 mm. 16” (Red) ...............1 No.