If Statements.
Loops.
Console Input.
Writing to a file.
Recursion.
Sunday, January 16, 2011
Sunday, January 9, 2011
Programming: Java: Tutorials: Input and Output using files.
Here is some simple code to read from an input file write to an output file.
Saturday, November 13, 2010
Programming: COW Interpreter - A java interface for Bovine Programmers...
In one of my lectures at Swansea University the topic of Esoteric Languages came up, mainly on this topic we discussed the languages of BrainF*** and COW.
BrainF*** is a programming language that only contains the characters:
< > + - , . [ ]
COW only contains 12 commands, each written as MOO's:
moo
mOo
moO
mOO
Moo
MOo
MoO
MOO
OOO
MMM
OOM
oom
*These are of course all case sensitive*
Upon further research into these languages I came across this site: http://www.bigzaphod.org/cow/
And with it, a worrying thing arose to me. There were no stable compilers or interpreters for this great language.
Bare in mind ("rawr"), that at this point I had yet to even write a program in COW, but none the less I was enthused by how such a simple architecture could still have a modern day application, given that COW, and BrainF*** alike are based off of the old Tape Driven computer Systems, where a Command Tape drives the position and data stored in a Data Tape.
BrainF*** is a programming language that only contains the characters:
< > + - , . [ ]
COW only contains 12 commands, each written as MOO's:
moo
mOo
moO
mOO
Moo
MOo
MoO
MOO
OOO
MMM
OOM
oom
*These are of course all case sensitive*
Upon further research into these languages I came across this site: http://www.bigzaphod.org/cow/
And with it, a worrying thing arose to me. There were no stable compilers or interpreters for this great language.
Bare in mind ("rawr"), that at this point I had yet to even write a program in COW, but none the less I was enthused by how such a simple architecture could still have a modern day application, given that COW, and BrainF*** alike are based off of the old Tape Driven computer Systems, where a Command Tape drives the position and data stored in a Data Tape.
[ A 26 line COW program that counts indefinitely in Fibonacci Numbers, or until you reach ]
[ a numerical overflow. ]
[ A 1337 line COW program that runs through 99 Bottles of Beer on the wall. ]
Tuesday, November 2, 2010
Programming: Java: 1st Million Prime Numbers (Why the hell not?)
The program counts upward in prime number, given that the most time the program spends will be updating to the screen I forced it to only print out every thousandth number... Just so I'd know the program was still running, and to see how much it was slowing down as the calculation went on.
c:\Users\Joss\Documents\JCreator LE\MyEclipse\CS141_Assignment_01_Whittle\bin>ja
va Primes 1000000
1000 {7907}
2000 {17387}
3000 {27437}
4000 {37811}
5000 {48593}
6000 {59357}
7000 {70639}
8000 {81773}
9000 {93169}
10000 {104723}
11000 {116443}
12000 {128173}
13000 {139891}
14000 {151693}
15000 {163819}
16000 {176063}
17000 {187951}
18000 {200177}
19000 {212353}
20000 {224729}
21000 {237179}
22000 {249437}
23000 {262133}
24000 {274517}
25000 {287107}
26000 {300017}
27000 {312581}
28000 {324941}
29000 {337537}
30000 {350351}
31000 {363257}
32000 {376099}
33000 {389167}
34000 {401981}
35000 {414971}
36000 {427969}
37000 {440717}
38000 {453877}
39000 {467209}
40000 {479903}
41000 {493123}
42000 {506119}
43000 {519217}
44000 {532331}
45000 {545731}
46000 {559067}
47000 {572303}
48000 {585467}
49000 {598681}
50000 {611951}
51000 {625181}
52000 {638971}
53000 {652417}
54000 {665633}
55000 {679249}
56000 {692539}
57000 {706009}
58000 {719633}
59000 {732911}
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61000 {760261}
62000 {773599}
63000 {787187}
64000 {800557}
65000 {814243}
66000 {827699}
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68000 {855331}
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71000 {896003}
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Thursday, October 7, 2010
Friday, June 18, 2010
Thursday, June 17, 2010
Electronics: Binary Clock: Concept & Design
As a way to get back into electronics and integrated circuitry before heading off to University in September I have started a project to design and build a Binary Clock.
A Binary Clock displays time using two groups of LED's; one consisting of six LED's, and the other of seven for a total of 13.
This is the most efficient Display Model for showing time in Binary, despite the fact it can go up to 315:715, any display smaller than this could not display the vital 23:59 needed to show time in 24 hour format. A display for showing Binary Time in a 12 hour format is only different by the one LED used to represent "20 hours" (left most, row 2), but seeing as an LED would have to be added in to signal AM or PM the 13 LED Display is the most efficient configuration.
The Micro-Controller:
The Micro-Controller is the brains of the beast, it has two Ground (GND) pins, one Voltage In (VIN) pin, and 15 Digital I/O pins. By programming the Chip to output either 5volts or 0volts to each of the first 13 pins we control what number configuration is displayed. The last three pins are reserved for the two Buttons to set the time, and a Piezo Buzzer to allow the clock to make audio signals.
A Binary Clock displays time using two groups of LED's; one consisting of six LED's, and the other of seven for a total of 13.
[ A Binary Display showing 6:33am ]
[ A Binary Display showing 18:33pm (6:33pm) ]
[ Schematic v2 ]
This is the 2nd Revision of my Schematic for the Clock. It includes a power circuit (Top Left), a BasicStamp2 Micro-Controller (Top Right), an array of 13 LED's to display the time (Bottom Left), and a In/Out bank consisting of a Button to set the hour, a Button to set the minute, and a Piezo Buzzer to allow the clock to chime or beep on the hour.
The Power Circuit:
The power circuit consists of a standard DC Power Jack (J1), a Diode (D1), a Two Position Switch (S1), two 0.1uf Ceramic Capacitors (C1 & C2), and a 7805 Voltage Regulator (IC3).
By placing a Capacitor on either side of the Voltage Regulator we smooth out any signals or frequencies that may be in the power line. The Diode right after the Power Jack ensures that the flow of electricity does not flow the wrong way, as this could easily damage the Voltage Regulator.
By placing a Capacitor on either side of the Voltage Regulator we smooth out any signals or frequencies that may be in the power line. The Diode right after the Power Jack ensures that the flow of electricity does not flow the wrong way, as this could easily damage the Voltage Regulator.
The Micro-Controller:
The Micro-Controller is the brains of the beast, it has two Ground (GND) pins, one Voltage In (VIN) pin, and 15 Digital I/O pins. By programming the Chip to output either 5volts or 0volts to each of the first 13 pins we control what number configuration is displayed. The last three pins are reserved for the two Buttons to set the time, and a Piezo Buzzer to allow the clock to make audio signals.
[ BasicStamp2 Micro-Controller ]
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