Why are multiple NAND gates often used in place of other single ...

[j.rubin]

Why are multiple NAND gates often used in place of other single function gates?
 
  A) It makes it possible to use spare portions of NAND IC packages to implement other logic functions, perhaps reducing the total IC package count.
  B) It is easier to design logic circuits with a single gate type, since you only have to fully understand how one type of gate works.
  C) NAND gates are cheaper than any other type of gate.
  D) NAND gates are packaged more densely on IC's than other types of gates.

Question 2

The unit of measure for frequency is?
 
  A) Hertz B) Cycles per second (CPS)
  C) Both A & B D) Neither A nor B

[onowka]

Answer to Question 1

A

Answer to Question 2

C