1. Review Binary –Each digit place is a power of 2 –Any two state phenomenon can encode a binary number –The number of bits (digits) required directly relates to the amount of physical resource required –Bit, Byte, 1K, 1Meg

2. Review Integers –Simple whole numbers –How many bits required to contain an integer The power of 2 just larger than that integer Floating point –Numbers with decimal points –Numbers with exponents –Can represent very large and very small numbers

3. Review Numeric expressions (+ - * /) 1+2 3*4 + 7 6.2/(4.2-2.2) Boolean (true, false) (, =, ==, !=) 1 > 2 (3*5) <= 17

4. Review Characters –Every character corresponds to a unique number –Sorting order –ASCII - encodes all American English characters (1 byte) –UNICODE encodes all commercially used characters in the world (2 bytes)

5. Programs Variables Assignment Sequences of instructions

6. Variables A named place to store a value Assignment George = 32; Size = 17; Weight = 120;

7. Program A sequence of things to do A = 75; B = A+13; A = A-B+3; C = A/2 + 1;

8. Program A sequence of things to do A = 75; B = A+13; A = A-B+3; C = A/2 + 1;

9. Program A sequence of things to do A = 75; B = A+13; A = A-B+3; C = A/2 + 1; A + 13 75 + 13 = 88

10. Program A sequence of things to do A = 75; B = A+13; A = A-B+3; C = A/2 + 1; A-B+3 75 - 88 + 3 = -10

11. Program A sequence of things to do A = 75; B = A+13; A = A-B+3; C = A/2 + 1; A / 2 + 1 -10 / 2 + 1 = -4

12. Program Quiz Do each in sequence Fred = 2*7; Jane = 16; Fred = Jane - Fred; Jane = Fred/2;

13. Program Quiz Do each in sequence Fred = 2*7; Jane = 16; Fred = Jane - Fred; Jane = Fred/2;

14. Program Quiz Do each in sequence Fred = 2*7; Jane = 16; Fred = Jane - Fred; Jane = Fred/2;

15. Program Quiz Do each in sequence Fred = 2*7; Jane = 16; Fred = Jane - Fred; Jane = Fred/2; Jane - Fred 16 - 14 2

16. Program Quiz Do each in sequence Fred = 2*7; Jane = 16; Fred = Jane - Fred; Jane = Fred/2; Jane - Fred 16 - 14 2

17. Program Quiz Do each in sequence Fred = 2*7; Jane = 16; Fred = Jane - Fred; Jane = Fred/2;

18. Arrays Access by Index A B

19. Arrays Access by Index A[0] = 7; B[1] = 4; B[2] = A[0]+1; A[1] = B[2]/2; A[3] = 7-B[1]; A B

20. Arrays Access by Index A[0] = 7; B[1] = 4; B[2] = A[0]+1; A[1] = B[2]/2; A[3] = 7-B[1]; A B

21. Arrays Access by Index A[0] = 7; B[1] = 4; B[2] = A[0]+1; A[1] = B[2]/2; A[3] = 7-B[1]; A B

22. Arrays Access by Index A[0] = 7; B[1] = 4; B[2] = A[0]+1; A[1] = B[2]/2; A[3] = 7-B[1]; A B

23. Arrays Access by Index A[0] = 7; B[1] = 4; B[2] = A[0]+1; A[1] = B[2]/2; A[3] = 7-B[1]; A B

24. Arrays Access by Index A[0] = 7; B[1] = 4; B[2] = A[0]+1; A[1] = B[2]/2; A[3] = 7-B[1]; A B

25. Strings An array of Characters A=“Lloyd”; B= “Big”; B[2] = A[0]+1; A B

26. Strings An array of Characters A=“Lloyd”; B= “Big”; B[2] = A[0]+1; A B

27. Strings An array of Characters A=“Lloyd”; B= “Big”; B[2] = A[0]+1; A B

28. Strings How do you put “ in a string? Special characters preceded by \ A=“Lloyd”; B= “Big”; B[2] = A[0]+1; B = “\”P\\” A B

29. Sound Each time samples the volume (amplitude) Sound = array of volume values

30. 2D-Arrays Rows Columns [Rows-1,Columns-1] [0,0] # of elements = Rows * Columns 5 10 [4,9] 5 * 10 = 50

31. Images - 2D array of values Image [x,y]