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Below is a cache of http://cegt201.bradley.edu/~jhirwin/ee206/L08_Multiplier.pdf. It's a snapshot of the page taken as our search engine crawled the Web.
The web site itself may have changed. You can check the current page or check for previous versions at the Internet Archive. Yahoo! is not affiliated with the authors of this page or responsible for its content. 2 x 2 Multiplier A1 A0 B0 B1 W X Y Z Bradley University, Department of Electrical and Computer Engineering 24 July2003 EE 206 - SOPHOMORE LAB DIGITAL DESIGN LAB I This lab deals with the design and testing of combinational logic circuits. Prelab Design a combinational logic circuit that accepts two 2-bit numbers and generates the product in binary. The circuit will
have four binary inputs and four binary outputs as shown in Fig 1. Fig 1. A1 is the most significant bit and A0 the least significant bit of the multiplier. B1 is the most significant bit and B0 the least significant bit of the multiplicand. W is the most significant bit and Z the least significant bit of the product. In your design, you are to use the 7400 series of TTL logic (see attached list of ICs available in the lab) and you are to
attempt to minimize cost*. This will require considering various designs (a minimum of two designs must be consid-
ered). Once you have completed what you consider to be a reasonable low cost design, verify its operation using Log- icworks . Determine the ICs required to implement your design. Then using the pricing for each IC, determine the cost of this implementation. (You will need to use the web to find a low cost vendor of 7400 series ICs. For example, Digi-
Key is a very large vendor of electronic components, including 7400 series ICs, and its website is at http:// www.digikey.com/ . You can search its site to find pricing on the ICs you need for your design. However, though Digi-Key is competitive, you might be able to find a vendor with lower pricing.) For each design you try put a table in your note-
book giving the types, numbers, vendor (including URL), and cost for each IC used as well as the total cost* (called a
Bill of Material.) Indicate in your notebook which implementation you believe is lowest in cost, and discuss why you
believe this. *Cost = sum of (the cost of each IC needed plus $.25 per IC for board space). Laboratory Construct and test the 2-bit X 2-bit multiplier circuit designed in the prelab. Once your multiplier functions correctly,
add a four bit counter to drive the inputs of your multiplier and display the output of the multiplier in decimal using a
MAN7X 7-segment display and driver. See Fig 2. The cost of your final design (excluding the counter and 7-segment
display and driver) will have some impact on the experimental result component of the lab grade. Fig 2. Block Diagram of System 2 x 2 Multiplier A1 A0 B0 B1 W X Y Z counter Multiplier Driver Resistor
Pack MAN7X Display
The web site itself may have changed. You can check the current page or check for previous versions at the Internet Archive. Yahoo! is not affiliated with the authors of this page or responsible for its content. 2 x 2 Multiplier A1 A0 B0 B1 W X Y Z Bradley University, Department of Electrical and Computer Engineering 24 July2003 EE 206 - SOPHOMORE LAB DIGITAL DESIGN LAB I This lab deals with the design and testing of combinational logic circuits. Prelab Design a combinational logic circuit that accepts two 2-bit numbers and generates the product in binary. The circuit will
have four binary inputs and four binary outputs as shown in Fig 1. Fig 1. A1 is the most significant bit and A0 the least significant bit of the multiplier. B1 is the most significant bit and B0 the least significant bit of the multiplicand. W is the most significant bit and Z the least significant bit of the product. In your design, you are to use the 7400 series of TTL logic (see attached list of ICs available in the lab) and you are to
attempt to minimize cost*. This will require considering various designs (a minimum of two designs must be consid-
ered). Once you have completed what you consider to be a reasonable low cost design, verify its operation using Log- icworks . Determine the ICs required to implement your design. Then using the pricing for each IC, determine the cost of this implementation. (You will need to use the web to find a low cost vendor of 7400 series ICs. For example, Digi-
Key is a very large vendor of electronic components, including 7400 series ICs, and its website is at http:// www.digikey.com/ . You can search its site to find pricing on the ICs you need for your design. However, though Digi-Key is competitive, you might be able to find a vendor with lower pricing.) For each design you try put a table in your note-
book giving the types, numbers, vendor (including URL), and cost for each IC used as well as the total cost* (called a
Bill of Material.) Indicate in your notebook which implementation you believe is lowest in cost, and discuss why you
believe this. *Cost = sum of (the cost of each IC needed plus $.25 per IC for board space). Laboratory Construct and test the 2-bit X 2-bit multiplier circuit designed in the prelab. Once your multiplier functions correctly,
add a four bit counter to drive the inputs of your multiplier and display the output of the multiplier in decimal using a
MAN7X 7-segment display and driver. See Fig 2. The cost of your final design (excluding the counter and 7-segment
display and driver) will have some impact on the experimental result component of the lab grade. Fig 2. Block Diagram of System 2 x 2 Multiplier A1 A0 B0 B1 W X Y Z counter Multiplier Driver Resistor
Pack MAN7X Display
