How many adders are needed to construct 7-bit parallel adder? How many bits have typical full-adders ICs got?

(a) 7 full adders

(b)4 bits

Explanation:

(a)A n bit parallel adder requires n full adders to perform operation.

Here we want to get 7 bit parallel adder so 7 full adders are required to perform operation

(b)These full adders perform addition of two 4bit binary numbers.

i was actually wondering the same thing but i've tried and i don't think you can. i think once you set it up then that's what it stays as. sorry ; -;

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.