This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full 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 AB C:...
View Full Document
- Spring '08