电脑底层是怎么运算的?很多人不明白。我来说一说:
1.最底层:与非门
与非门(NAND):
nand(a,b)= ab nand(a,b)=\frac{}{~ab~}nand(a,b)= ab
然后n(a)= a =nand(a,a)n(a)=\frac{}{~a~}=nand(a,a)n(a)= a =nand(a,a)
and(a,b)=ab=n(nand(a,b))and(a,b)=ab=n(nand(a,b))and(a,b)=ab=n(nand(a,b))
or(a,b)=a+b=nand(n(a),n(b))or(a,b)=a+b=nand(n(a),n(b))or(a,b)=a+b=nand(n(a),n(b))
nor(a,b)= a+b =n(or(a,b))nor(a,b)=\frac{}{~a+b~}=n(or(a,b))nor(a,b)= a+b =n(or(a,b))
xor(a,b)=or(and(a,n(b)),and(n(a),b))xor(a,b)=or(and(a,n(b)),and(n(a),b))xor(a,b)=or(and(a,n(b)),and(n(a),b))
###2.加法器
a+b:和=xor(a,b)进位=and(a,b)a+b:\\和=xor(a,b) 进位=and(a,b)a+b:和=xor(a,b)进位=and(a,b)
注:还没有写完哦