Phone switch lab
ELEC 2507 – LAB 1: Phone switch
By
NKV
From the lab section L 11O
At the time
Tuesday 8:30-11:30am
Lab performed Tuesday January 21st 2014
Lab submitted Tuesday January 28th 2014
Last edited: Monday January the 27th at 11pm
Introduction:
In this laboratory experiment, a circuit will be connected on the Tektron Logic Lab trainer in order to allow one of four calling subscribers to connect and talk to one of eight call receiving subscribers. Only one conversation will be able to take place at any moment in time. This was the way communication by telephone used to take place, a worker would connect two people together by working on a phone switch board somewhat similar to what was put together in this lab.
This report will contain the specification and design of the previously mentioned phone switch along with details of the circuit used to create the phone switch and problems we may have ran into along the way. The testing and debugging will also be discussed in detail in order to present the various difficulties of creating a circuit like this one.
Specification:
The Tektron Logic board has various basic logic gates and with the help of a selection of wires, we were able to connect a multiplexer gate (MUX) and a demultiplexer gate (DeMUX) together to create a phone switch. Both of these gates are controlled by binary numbers which uses a switch to select one input out of four from the MUX (the callers) and sends a signal to one of the 8 outputs of the DeMUX (call receivers) this time with multiple switches.
There are limited amounts of AND and OR gates on the board, therefore alternatives will need to be used in the design of the MUX and DeMUX gates. Each step, testing was done to insure no errors were in the circuit. We will be able to select which input we want by dialing a 2-bit binary number and doing the same for the output by dialing a 3-bit binary number.
Design:
The circuit had two major parts: a
By
NKV
From the lab section L 11O
At the time
Tuesday 8:30-11:30am
Lab performed Tuesday January 21st 2014
Lab submitted Tuesday January 28th 2014
Last edited: Monday January the 27th at 11pm
Introduction:
In this laboratory experiment, a circuit will be connected on the Tektron Logic Lab trainer in order to allow one of four calling subscribers to connect and talk to one of eight call receiving subscribers. Only one conversation will be able to take place at any moment in time. This was the way communication by telephone used to take place, a worker would connect two people together by working on a phone switch board somewhat similar to what was put together in this lab.
This report will contain the specification and design of the previously mentioned phone switch along with details of the circuit used to create the phone switch and problems we may have ran into along the way. The testing and debugging will also be discussed in detail in order to present the various difficulties of creating a circuit like this one.
Specification:
The Tektron Logic board has various basic logic gates and with the help of a selection of wires, we were able to connect a multiplexer gate (MUX) and a demultiplexer gate (DeMUX) together to create a phone switch. Both of these gates are controlled by binary numbers which uses a switch to select one input out of four from the MUX (the callers) and sends a signal to one of the 8 outputs of the DeMUX (call receivers) this time with multiple switches.
There are limited amounts of AND and OR gates on the board, therefore alternatives will need to be used in the design of the MUX and DeMUX gates. Each step, testing was done to insure no errors were in the circuit. We will be able to select which input we want by dialing a 2-bit binary number and doing the same for the output by dialing a 3-bit binary number.
Design:
The circuit had two major parts: a