HP 71B and TI-84 Plus CE: Binary Decimal Conversions Revised
The programs presented can easily convert integers without the needs of lists or strings in input.
HP 71B Programs: BINDEC, DECBIN
No modules are required.
BINDEC (137 bytes)
100 DISP "BIN>DEC" @ WAIT .5
105 DESTROY A,B,C,D,E
110 INPUT "BIN? ";A
115 B=1 @ D=0 @ C=A
200 E=A/10 @ A=INT(E)
205 D=D+10*B*(E-A) @ B=2*B
210 IF A THEN 200
300 DISP "(2)";C;"="D
DECBIN (130 bytes)
100 DISP "DEC>BIN" @ WAIT .5
105 DESTROY A,B,C,D
110 INPUT "DEC? ";D
115 B=0 @ A=D @ C=1
200 E=D/2 @ D=INT(E)
205 B=B+C*(D<E)
210 C=C*10
215 IF D THEN 200
300 PRINT A;"=(2)";B
TI-84 Plus CE Programs: BINDEC2, DECBIN2
BINDEC2
"V.2"
Disp "BIN>DEC"
Input "BIN? ",A
1→B:0→D:A→C
Lbl 2
A/10→E:iPart(E)→A
D+10*B*(E-A)→D
2*B→B
If A:Goto 2
Disp "(2) "+toString(C)+"= "+toString(D)
DECBIN2
"V.2"
Disp "DEC>BIN"
Input "DEC? ",D
0→B:D→A:1→C
Lbl 2
D/2→E:iPart(E)→D
B+C*(D<E)→B
10*C→C
If D:Goto 2
Disp toString(A)+"=(2) "+toString(B)
This is recommended for only integer values of 512 (decimal base) or less.
Example
Decimal: 476 (DEC>BIN)
Result Binary: 111011100
Binary: 10111011 (BIN>DEC)
Result Decimal: 187
Source
Craig, John Clark. 119 Practical Programs For The TRS-80 Pocket Computer TAB Books Inc. Blue Ridge Summit, PA. 1982 pg. 133
Happy computing,
Eddie
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