Why am I in school...

I am in school because my parents send me to school. But as I continue my studies, I learned that I am studying for myself. My parents pay my tuition, allowances, and all but my output in school reflects me and not them. Yes, they want to know my grades but I found out that it doesn't matter whatever was written on my course card. They don't comment anything negative about it. They just seem to accept whole hearted what I have given to them. Then I began thinking again that I really like what they've been doing all this time. Because of them, I have my own will and freedom to do what I want in school. I have the liberty to spend my time in studying and doing other stuffs. If I did well in school, then I would have high grades. My parents would be really proud. But that high grades don't belong to them, but to me. Therefore, I am studying because of my parents but not really for them. But it can show my gratitude to them. I am studying for myself so that someday, somehow I can live and become a good human to our society.

Entry #1

I am currently taking up ENGLONE. One topic that is on my mind right now is about logic operations. Therefore, I will discuss some basics about logic operations.

Binary variables and logic operations compose the binary logic. Binary variables are letters of the alphabet such as A, B, C, x, y, and z whose values can only be 1 and 0. The three basic logical operations are AND, OR, and NOT.

The AND operation is represented by a dot or no operator sign at all. Examples are x.y=z or xy=z. This is read as “x AND y is equal to z.” This logical operation means that z=1 if and only if x=1 and y=1; otherwise z=0.

The OR operation is represented by a plus sign. An example is x+y=z. It is read as “x or y is equal to z.” This logical operation means that z=1 if x=1 or if y=1 or both x and y is 1. If both x and y is 0, z=0.

The NOT operation is represented by a prime or an over bar. An example is x’=z or x (place a line over x) = z. This is read as “NOT x is equal to z.” It means that z=0 if x=1 or z=1 if z=0. This operation is also referred to as the “complement operation” since it changes 1 to 0 and 0 to 1.

Source:

Mano, M. (2002). Digital Design. New Jersey: Prentice Hall.