Question

Task Description Design a Home Security System. The device/product requires the use of fixed function logic ICs, transducers, and passive electronic components. Project 2: Design and built an electronic voting system. The expectations from this project are to enable at least three people to vote Yes' or 'No'. The number of Yes' and 'No' vote should be counted individually and displayed subsequently using 7-segment displays. You need to use only one BCD to 7-segment decoder within the system What need to do? 1. Design the system starting from a problem statement through block diagram up to the circuit diagram. 2. Built the circuit on a breadboard and demonstrate a working system. 3. At the end of the project, you need to present the details of the design process (how the design criteria have been addressed in the project) through a written paper. 4. Research and develop design criteria that should be followed for the product design. Also establish a step-by-step design procedure along with a time-line. Upon approval of the design criteria and design procedure, you can then proceed with the development of the design. 5. Develop a conceptual design and identify commercial parts and components that can be used for the product development. Collect information and data sheets for these parts and components from a variety of sources- books, Internet, magazines, and companies. Each group needs to submit a written report describing the design process and justification of design decisions. This should also include the small group critiques, along with appropriate citation of references. 6. Use visual aids for the oral presentation and allow listeners to ask questions on your group findings. Assign specific duties to each small group member. fr

Topic:JK flip flop

Answer 1

K-MAPS.!? ka!- Iz:- 10 ol 10 or Х х A Х O olo o - Х 1 X X Х K₂ = 0 J2 =9,90
To design a circuit to record total number of 'yes' votes and to display a the number in a seven segment display let us use a 'AND' gate to manipulate the clock signal given to the synchronous up counter. Since we have chosen rising edge flip flops, let us give the clock signal as input from a a monostable multivibrator whose output shift from logic 0 to logic 1 when a a trigger is given and which falls back to logic 0 after a time $T_{ON}$ seconds.

output of this monostable multivibrator look as below TON is this point Trigger at this given Here, TON = Pulse coidth of multivibrator Pn oues Trigger signal will be pressing of Yes Switch.

IC 555 CKT PIN DIAGRAM Power I apply AND Vcc 8 F2 Trigger to ole - 3 6 77 Discharge Threshold 5- control there Reset 4

Required Morosteuble da Multivibrator circuit :- atke Power supply. Trigger Ry pulse & 4 R2 TC 61555 ماه 2 Ve T Yes a 439 Ve olp Trigger pulse -To t

TSV Final block IC name diagram V CD 4511B R. a A B R 3-bit up ch OA QB SC Tb c counter using JK Flip Flops g Q. D Required Monostable Multivibrator Ciscent el le I clock Фе op R BCp to 7 segment display R= Current lisiting ressistor Converter
Same circuit can be used to count total number of 'No' votes.