74XX00 is a quad 2-input () gate device
举一反三
- A 2-input gate produces a HIGH output only when the inputs agree. This type of gate is a(n) A: OR gate B: AND gate C: NOR gate D: XNOR gate
- For a 2-input NAND gate, output Y is LOW only when both inputs are HIGH,when Y is HIGH when .
- 向量 $\alpha=(1,a,2)$ 与 $\beta=(2,4,b)$ 线性相关，则（ ）. A: $a=2,\quad b=2$ B: $a=4,\quad b=4$ C: $a=4,\quad b=2$ D: $a=2,\quad b=4$
- If any input to an OR gate is zero, the output is zero.
- 求4/(1+x^2)在[0,1]上积分的近似值 A: quad(@(x) 4./(1+x^2),0,1) B: quad(@(x) 4./(1+x.^2),0,1) C: quad(@(x) 4/(1+x.^2),0,1) D: quad(@(x) 4/(1+x^2),0,1)