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VTech Precomputer Power Pad Plus MORE ABOUT GROUPS - GOSUB ... RETURN, 10INPUT “ENTER THE CELSIUS TEMP”;C, 20GOSUB, 30INPUT “ENTER THE FAHRENHEIT TEMP”;F, 40GOSUB, 50END, 520RETURN, 630RETURN

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MORE ABOUT GROUPS - GOSUB ... RETURN

How much is 10 degrees Celsius in Fahrenheit? What is 100 degrees Fahrenheit in Celsius? Here’s a program that gives you the answers. It uses the GOSUB and RETURN statements to create a group of instructions that can be executed from various parts of the program. Remember when you use a GOSUB, the program branches to the line number that you specify in the statements that will be executed sequentially until a RETURN statement is encountered. At that point the program will resume at the next statement following the GOSUB. Confusing? Not really, but first some more background about our problem.

The formula for converting Celsius to Fahrenheit is:

F=(9/5*C)+32

The formula for converting Fahrenheit to Celsius is:

C=(F-32)*5/9

Now for the program!

Type:

New

10INPUT “ENTER THE CELSIUS TEMP”;C

20GOSUB 500

30INPUT “ENTER THE FAHRENHEIT TEMP”;F

40GOSUB 600

50END

500F=(C*9/5)+32

510PRINT “THE FAHRENHEIT TEMP IS”;F

520RETURN

600C=(F-32)*5/9

610PRINT “THE CELSIUS TEMP IS”;C

630RETURN

RUN

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Contents

Page Dear Parent: VTech CHAPTER 1 INTRODUCTION CHAPTER 2 GETTING STARTED CHAPTER 3 THE KEYBOARD CHAPTER 5 WORD PROCESSOR CHAPTER 6 SYSTEM SETUP CHAPTER 7 BASIC CHAPTER CALCULATOR TIME LIMITS CHAPTER 10 SCORING CHAPTER 1: INTRODUCTION CHAPTER 2: GETTING STARTED MAIN BATTERY INSTALLATION BATTERY NOTICE BACKUP BATTERY INSTALLATION AC ADAPTOR CONNECTION PRINTER CONNECTION MOUSE CONNECTION GENERAL OPERATION ON BUTTON & OFF BUTTON CONTRAST SWITCH VOLUME SWITCH LED STATUS DISPLAY BAR AND LCD SCREEN CHAPTER 3: THE KEYBOARD SPECIAL KEYS Page Page ACTIVITY SELECTOR Page CHAPTER 4: ACTIVITIES AND FUNCTIONS HOW TO PLAY SELECTING/CHOOSING/HIGHLIGHTING CUSTOMIZED SCREEN AND TIPS OF TODAY ENTERING ACTIVITIES Page GENERAL DISPLAY WORD GAMES Page MATHEMATICS COMPUTER SKILLS Page GAMES Page TRIVIA DEMO MODE SYSTEM SETUP CHAPTER 5: WORD PROCESSOR FILE OPTIONS New Load Save Delete EDIT OPTIONS Define a Block Block Begin Block End Block Copy FORMAT OPTIONS Justify Left Justify Right Justify Center Bold TOOLS OPTIONS Check Spelling Symbols PRINT OPTIONS Printer Setup HELP EXIT CHAPTER 6: SYSTEM SETUP PRINTER SETUP TIPS OF TODAY SCREEN SAVER CLEAR LAST SCORE ICON BOX QUICK MENU SETUP CUSTOMIZE SETUP DEMO MODE RAM CART. MANAGER List Files Save File Load File POWER LINK CHAPTER 7: BASIC INTRODUCTION WHAT IS BASIC WHAT IS A PROGRAM WHY SHOULD I LEARN TO USE A COMPUTER THE KEYBOARD THE LCD SCREEN GETTING STARTED 10 PRINT “HI THERE” PRINT “HI THERE” NEW AUTO BASIC COMPUTER TUTORIAL EXAMPLE OF A BASIC PROGRAM PRINT 12-4+7 END 10 PRONG 12-4+7 LET’S DO SOME ARITHMETIC 10 PRINT 6*2.204 10 PRINT 6/2.204 10 PRINT 2^10 10 PRINT 3+11/7 NUMERIC VARIABLES 10 LET A=8 20 LET B=10 30 LET B=15 40 LET C=A+B PRINT “FIRST NUMBER”; A PRINT “SECOND NUMBER”; B STRING VARIABLES VARIABLE NAMES CONTENTS CURTIS ALPHABET SOUP CONSTANTS New PRINT N IF N<10 THEN 50 PRINT “THE ANSWER IS”; N press ENTER INPUTTING DATA LET N=10 LET A$=“NANCY LIKES CHOCOLATE CUPCAKES” INPUT “GIVE ME A NUMBER”; N MAKING DECISIONS IF A > 90 THEN PRINT “YOU ARE SMART” INPUT “ENTER THE LENGTH”;L INPUT “ENTER WIDTH”;W LET A=L*W PRINT “THE AREA IS”;A INPUT “ANOTHER? (Y/N)”;R$ 50PRINT “ARITHMETIC OPERATION YOU WANT” 60PRINT “ME TO DO FOR YOU” 70INPUT R$ 100IF R$=“A” THEN C=A+B : GOTO 110IF R$=“S” THEN C=A-B :GOTO LOOPING 10INPUT “GIVE ME A NUMBER”;N 20PRINT “YOUR NUMBER IS”;N 30GOTO FOR N=1 TO 20PRINT “N IS”;N 40IF N > 10 THEN END 50GOTO FOR N=1 TO 10 STEP 10FOR N=10 TO 1 STEP MORE ABOUT GROUPS - GOSUB ... RETURN 10INPUT “ENTER THE CELSIUS TEMP”;C 20GOSUB 30INPUT “ENTER THE FAHRENHEIT TEMP”;F 40GOSUB REFERENCE SECTION CLEAR 10 Clear DIM 10DIM FRIEND$(50) END 160END 999END PSET 10 CLS 20PSET 100 PRESET 20FOR X= 50 TO SOUND FOR ... TO ... STEP ... NEXT 60FOR ITEMS=1 TO 70INPUT PRICE 80SUM=PRICE+SUM Y=9 : X=SQR(Y) : PRINT ARITHMETIC FUNCTIONS PRINT ABS (7-2*4) PRINT SGN (A); SGN (A-A) PRINT INT (-6.7) PRINT RND (19) STRING FUNCTIONS A$=STR$(73) 10A$=STR$(7*3) 20B$=A$+“BIG” 30PRINT B$ GRAPHICS FUNCTION SUBSTRINGS 10 A$=“ABCDE” 20B$=LEFT$ (A$+“FGH”,6) RUN ABCDEF 10 A$=“WHY” 20B$=RIGHT$(A$+“ME”,4) 10X=ASC(“ROY”) 20PRINT 30PRINT CHR$(68) RUN D 30GOSUB IF...THEN...ELSE 30 IF X >25 THEN 10 INPUT A,B 20IF A > B THEN 30IF A < B THEN 40IF A = B THEN LOGICAL OPERATORS TRUTH TABLES TRUTH TABLE FOR “NOT” FUNCTION TRUTH TABLE FOR “AND” FUNCTION TRUTH TABLE FOR “OR” FUNCTION 10 INPUT A,B,C INPUT 35 INPUT AMOUNT 140 INPUT “WHAT IS YOUR NAME”;NAME$ LET 40 LET SUM=A+B+C 25 LET AMOUNT=PRICE-DISCOUNT PRINT 80PRINT NAME$; “IS COMING” 230PRINT “SUM=”; A+B+C READ AND DATA 10DATA 10,60,70,80,90 RESTORE 10DATA 1,3,8,9 20READ A,B,D 30RESTORE 40READ X,Y APPENDIX EXAMPLE PROGRAMS 10 PRINT “Weight on the Moon” 20INPUT “Your Weight in Lbs.” ; WEIGHT 30MOONWEIGHT = WEIGHT /6 10PRINT “Rock, Paper, Scissors” 20PRINT “Type in P, R, S” 30INPUT “and see if you win. ->”;ANSWER$ 40PRINT “You :” ; ANSWER$; 50MYGUESS = INT (RND (0)*(3) + 1) 10PRINT “If an average life” 20PRINT “span is 70 years” 30PRINT “Then how many” 40PRINT “generations would have” 50PRINT “lived in 2000 years?” 10 DIM N$(5) 20 PRINT “The Fortune Teller” 30 INPUT “Are you a boy or a girl” ;S$ 40INPUT “Pick a number between 2-5”;NUMBER 50FOR COUNT = 1 TO NUMBER 10DIM WEEK$(6) 20DIM EVENT$(6) 30DATA “SUNDAY”,“PLAY TIME” 40DATA “MONDAY”,“LEARN ECOLOGY” 50DATA “TUESDAY”,“LEARN ENGLISH” 10REM * MAD LIB’S 20PRINT “Mad Lib’s” 30INPUT “Adjective”; A1$ 40INPUT “Verb”; V$ 50INPUT “Adverb”; A2$ 80 GOTO 100PRINT "No! The secret number is smaller 110GOTO 200PRINT "Yes! The number is "; NO; 210END 10 REM Twinkle Twinkle Little Star 20DATA 62,62,19,19,10,10,19,30,30,36,36 30DATA 50,50,62,19,19,30,30,36,36,50 40DATA 19,19,30,30,36,36,50,62,62,19,19 50DATA 10,10,19,30,30,36,36,50,50,62 THE ASCII CODE TABLE THE ERROR MESSAGES Page CHAPTER 8: CALCULATOR BASIC CALCULATOR OPERATIONS USING THE MEMORY FEATURES: ADVANCED FUNCTIONS TRIGONOMETRY FUNCTIONS TIME LIMITS TIMING CODE CHAPTER 10: SCORING SCORING CODE POINTS CHAPTER 11: POWER LINK CONNECTING THE CABLE CONTROLLING VTECH POWER LINK™ Trivia PC File Transfer Page CHAPTER 12: HOW TO USE AN EXPANSION CARTRIDGE CHAPTER 13: CARE AND MAINTENANCE