thw_mod3_no4

# thw_mod3_no4 - Score 30 Your Class No is the last four...

This preview shows pages 1–2. Sign up to view the full content.

ECE 270 Introduction to Digital System Design Fall 2011 VCC F(C,B,A) D0 4 D1 3 D2 2 D3 1 D4 15 D5 14 D6 13 D7 12 A 11 B 10 C 9 G 7 W 6 Y 5 TakeHomaWork for Module 3 – Due Wednesday, October 5 1. [14 pts] Show how you can implement any arbitrary 3-variable Boolean function using only an 8:1 multiplexer (specifically, a 74x151), an LED, some resistors, and some DIP switches (note that a “closed” switch should be interpreted as a logic “0”, while an “open” switch should be interpreted as a logic “1”). [2 pts] How many different functions of three variables are there? ______________ [12 pts] To implement the function F(C,B,A) = C · A + C · (A B) on the circuit, above, determine which “data” switches should be closed ( work must be shown for full credit ). Circle the input switches that should be closed : D0 D1 D2 D3 D4 D5 D6 D7 Derivation: Name: __________________________________________ Class No: __ __ __ __ - __ Signature: ______________________________________

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Score: _______ / 30 Your Class No. is the last four digits of your PUID followed by the first character of your last name. ECE 270 Introduction to Digital System Design Fall 2011 2. [16 pts] ABEL Review Questions: (a) A0 , A1 , A2 , A3 defined as the set ALL : (b) B0 , B1 , B2 , B3 , B4 used as a range: (c) GE used as the tri-state enable for output signals G0 , G1 , G2 , G3 : (d) Write using ABEL syntax: G(W,X,Y,Z) = (X ⊕ Z)·(W ⊕ Y) ′ (e) Write using ABEL syntax: F(W,X,Y,Z) = W ′ ·Z·(X + Y ′ ) + Y·(X ′ + W + Z) (f) ABEL declaration that specifies input variables SA , SB , and SC are active low : (g) ABEL declaration that specifies variables R0 , R1 , R2 , and R3 are active low combinational outputs: (h) ABEL equation statement specifying that the tri-state enable for combinational output signals R0 , R1 , R2 , and R3 is given by the expression A·B ′ ·C:...
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

thw_mod3_no4 - Score 30 Your Class No is the last four...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online