For each of the calculations of Problem 6-27, determine if overflow has occurred.

Data from Problem 6-27

For the circuit of Figure 6-14, determine the sum outputs for the following cases.

(a) A register = 0101 (+5), B register = 1110 (–2); SUB = 1, ADD = 0 

(b) A register = 1100 (–4), B register = 1110(–2); SUB= 0,ADD = 1 

(c) Repeat (b) with ADD = SUB = 0.

Figure 6-14

Transcribed Image Text:

Transfer pulse 8 B₂B₂ B₂ B₂ D 12 7 B₂ CLK A3 Im A3 6 D B register 11 5 B₂ CLK A₂ A₂ D 10 B₁ 3 74LS283 A₁ A₁ CLK BoBo 2 D Bo CLK A A₂ ADD SUB 44 45 Col