Coding 101 1: Coding 01100101

In the first episode of Coding 101, we learn how to convert binary into decimal, then break it down into machine code. Binary: Binary is a base 2 system. With the total sum based on each binary value being either "on" or "off" (Which is why it's called "BINARY") 2-bit Binary Value * Each BIT can have 2 values - on or off - 1 or 0 * Each Bit is worth the value of powers of 2, counting up from 0. * We count the values from right to left. * With two bits, that means the "first" bit can be worth either "1" (2(0)) or "0" while the second bit can be worth "2" (2(1)) or "0" * If we have a value of 00 = 0 :: 11 = 3 :: 10 = 2 :: 01 -1 * If we have a n 8-bit value the maximum value will be (1+2+4+8+16+32+64+128) 255 Let's Break Down the process! * If I had a value like 10101010... what logic would I use to get to the DECIMAL value? (170) * I would create a "Total" Variable * I would look at each position, from left to right, giving each position a value of 0-7 * If the value was "0" then I would skip to the next value. * If the value was "1", then I would raise 2 to the power of that position, then add that value to the "Total" Variable. * Once I have no more values to calculate, I would report my total. Get in Touch With Us! * Subscribe and get Coding 101 automatically at TWiT.tv! * Follow PadreSJ and Snubs on Twitter. * Watch the show live and join the chatroom every Thursday at 1:30pm PST. * Email us at Padre@twit.tv and Shannon@twit.tv. Download or subscribe to this show at twit.tv/code.

Видео Coding 101 1: Coding 01100101 автора MySQL Чудотворец