Sharp PC-1500A Instruction Manual

RUNE - (50. 50) - (50, - 1001- (- 50, - 50) ----- 50 50 t -ll Starting pen position 50 - 50 LINE (50. 50) - (100, 100), 2, . B y Do not sale this PDF !!! ooo. 1001 ,. - -<- _, I I I >. f I I I ~ -- .- - ...J ISO. SOI 128 -50 ...

APPENDICES Do not sale this PDF !!! 137 ...

Normally. of course, this program would execute in asce·nding line-number sequence. The effect of the GOTO in line 20, however. is to cause SHARP to proceed immediately to line 50 and to begin in ascending sequf.?nce from there. Lines 30 and 40 are never executed. The general form of the GOTO statement is: GOTO expression where: expression evaluates to a number which is a valid program line·number (i.e. 1 through 65279). NOTE: Specifying a line.number which does not exist will result in an ERROR 11. If we \Vish to have several instr ...

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B. Range of Calculations Most machines have a range of numbers with which they can operate. In the PC· 1 SOOA. this ran9e is any number between 9.999999999 x 10 " 99 and - 9.999999999 x 10 " 99. When a number exceeds thiis range it becomes too large for the computer to handle and an "overflow" condition (signalled by error 37) occurs. There is also an "underflow" condition: the point at \vhich a number becomes too small. An underflo .. v condition will not be signalled; no error message or halt \viii occur. Any number which falls int ...

Demonstration Program 10 WAIT 0 20 DIM AS (0) * 13 30 INPUT "ENTER YOUR NAME". AS IO) 40 C = 0 : CLS 50 FOR I = 1 TO (LEN AS (0) - 1) 60 CURSOR C 70 PRINT MIDS (AS (0). I, 1) 80 c = c +2 90 NEXT I 100 WAIT 110 CURSOR C 120 PRINT RIGHTS (AS (OJ. 11 130 ENO Keystrokes: mmoorncornoo1 ..... 1 mm rn co oo rn '"'"r1 rn co onc..o w rn rn , •• , •• , !Il 00 CIJ [l[) '.Il OD CO ls-<•n lc:::l !Il QO CD !Il 00 Is••«) [Y) [QJ [J!J OD lSPAC•I 00 0000 CD""'"' c:J ''"'" ' CD (]Jl sHOFT j mcooom jcH·r<•I mrnm 1=1m1 ..... 1 o ocim ...