1. Experiment preview requirements
1. Review the working principle of the data selector.
2. Use the data selector to pre-design each logical function in the experimental content.
2. Experimental Purpose
1. Master the logical functions and usage methods of medium-scale integrated data selectors.
2. Learn how to use medium-scale integrated data selectors to form combinational logic circuits.
3. Experimental Principle
In the process of multi-channel data transmission, a circuit that can selectively transmit a certain channel from multiple signals to a unique public data output is called a data selector. Its selection function is determined by the input of the address code (selection control). End encoding decision. The function of the data selector is similar to a single-pole multi-throw switch, so it is also called a "multi-way switch".
1. Dual 4-to-1 data selector 74LS153
The so-called dual 4-to-1 data selector is to integrate two completely independent 4-to-1 data selectors on an integrated chip.
2. 8-to-1 data selector 74LS151
74LS151 is an 8-to-1 data selector with complementary output.
4. Experimental equipment and devices
1. TH-SZ digital system design experiment box;
2. 74LS04 six-phase inverter, data selector;
3. Several wires/plug wires.
5. Experimental content (Multisim simulation)
1. Use 74LS153 to implement a one-bit full adder.
2. Use 74LS151 or 74LS153 to design a circuit diagram to implement the function (F=m0, m4, m5).
