2. Welcome to the Digital World! Binary Numbers

3.  Diez means ????? in Spanish  From the Latin word decem  10 fingers = 10 number symbols 0 1 2 3 4 5 6 7 8 9 Then we use columns== how many 10s, how many 100s, etc 348 says: 3 hundreds + 4 tens + 8 ones We were raised on DECIMAL

4.  With only 2 positions—off or on—binary or digital has only 2 digits 0 and 1  So instead of ones, tens, hundreds, etc.; there is a ones column, a twos column, a fours column, an eights column and so on. Computers have on/off switches called GATES

5.  About now, you might be wondering why you should care.  For Matrix movie fans, the message of the series is that the person who knows the code, controls the world! So what?

6.  Money is all stored as code  Music is digital—stored as zeros and ones  Pictures  Movies  Books !!!!!!!!!!!!! Control the code---Rule the World! Know the Code!

7.  Binary Video: turning 36 in a binary number Binary Video:  Binary Video: the conceptthe concept To deeply understand HOW computers work, you need BINARY

8. Convert decimal 5 to binary 8s 0 8s 1 4s 1 2s 1 1s 1 4s 0 2s 0 1s 0

9. 1s 0 4s 0 ZZ ero 8s OO ne 4s ZZ ero 2s OO ne 1s Convert decimal 5 to binary 8s 1 2s 1 1s 1 4s 1 8s 0 2s 0

10. +8 Convert decimal 11 to binary 8s 0 8s 1 4s 1 2s 1 1s 1 4s 0 2s 0 1s 0 +2 +1

11. 1s 0 2s 0 4s 1 8s 0 4s 0 OO ne 8s ZZ ero 4s OO ne 2s OO ne 1s Convert decimal 11 to binary 8s 1 2s 1 1s 1

12.  Binary 0101 0000 1111 0011 0110  Hex 50f36 Computer Programmers use base 16 --makes shorter lines of code than binary

13. Use almost English and a compiler translates your code to binary: But the underlying language the computer uses is still binary 0011 1101 0110 1011 1111 0100 Higher level Languages: C++ Java Visual Basic html

14. It’s a DIGITAL world.