Home » Archimedes archive » Acorn User » AU 1994-12.adf » !StarInfo_StarInfo » Burrows/!Trans/!Help
Burrows/!Trans/!Help
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn User » AU 1994-12.adf » !StarInfo_StarInfo |
| Filename: | Burrows/!Trans/!Help |
| Read OK: | ✔ |
| File size: | 168F bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Help for Transistor
===================
By: Andrew Burrows
==================
Purpose
-------
Transistor allows you to build and test potential divider circuits on the screen. It is designed to be used as an aid in the teaching of potential divider theory. It provides a wide range of components so many different circuits can be experimented with.
The Icon bar
------------
Transistor puts an icon on the right hand side of the Icon bar. Clicking on the icon with select or adjust (left or right mouse buttons) will show the current window, this is initially the the design window but later can be the test window too. Clicking with menu (middle mouse button) makes a menu appear:
The Icon bar Menu
-----------------
Selecting a menu Item has the following effects:
Info � <--- Leads to a window showing information about Transistor
Options � <--- Leads to a dialogue box which allows you to choose between 5 or 4
band format for resistor display
Quit <--- Quits Transistor
The Design Window
-----------------
The design window shows the circuit diagram for a potential diver circuit. The toolboxes to the left and the bottom of the window contain various components which can be dragged into place on the diagram. The toolboxes can be turned on and off.
The toolbox on the left hand side of the window contains input components:
LDR Thermistor
Variable Resistor Moisture Probe
Resistor Switch
The toolbox under the window contains output components:
Lamp LED Buzzer
The input components can be dragged into place on the potential divider and the output components can dragged into place above the transistor.
The resistance of the resistor can be changed by clicking on the current value, a carat should appear and you can delete the old value and enter a new resistance.
You can enter resistance in any of these formats:
100 -- 100 ohms
100R -- 100 ohms
100r -- 100 ohms
1K -- 1000 ohms
1k -- 1000 ohms
1M -- 10000000 ohms
1m -- 10000000 ohms
There is a writable icon above the circuit diagram for you to enter a title for the circuit into.
The Design Window Menu
----------------------
Clicking on the design Menu with middle button brings up a menu:
Enter � <--- Leads to the Enter submenu
Test <--- Closes the design window and opens the test window.
� Toolboxes <--- Turns The toolboxes on and off.
The enter submenu allows you to enter components without the tool boxes being present.
R1 � <--- Leads to a list of input components
R2 � <--- Leads to a list of input components
Output � <--- Leads to a list of output components
To enter a thermistor into R1, for example, you would choose 'Thermistor' from the list of input components for R1.
The Test Window
---------------
You can open the test window by choosing 'Test' from the Design Window Menu. Once you open the test window it becomes the current window, so if you close it using the close icon you can then open it again by clicking on the icon on the iconbar.
The title for the circuit, as specified in the design Window, is shown in the title bar of the Test Window.
The test window has a circuit diagram of the potential divider circuit at the top and the potential divider equation at the bottom. The equation is shown, first without any values, then will all the values filled in and finally Vout is calculated. If Vout is above 0.7 Volts then the transistor will turn on the output. If the output is a Lamp or LED it will glow, if however it is a buzzer then the computer will make a beep approximately every 0.7 seconds.
The test window has 2 smaller windows attached to the side of it. These change depending on the components R1 and R2. They allow the conditions to be changed, for example, a thermistor is sensitive to temperature so it's window allows the temperature to be changed.
As the conditions change the resistance of the components change so the values of R1 and R2 are updated in the equation and a new value of Vout is found and if necessary the state of the output is changed.
Only the resistor's window does not allow you to change the conditions as the resistance of the resistor is fixed. However clicking on the small picture of a resistor in the top righthand corner brings up a window showing the colour coding of the resistor in either 4 or 5 band format. Note the resistor is always shown to have �5% tolerance. You can only change the value of the resistor in the design window (see above).
The Test Window Menu
--------------------
Clicking on the test window or the smaller attached windows with the middle mouse button (menu) brings up a menu. This menu only has one option 'ReDesign' this returns you to the design window and makes it the current window.
How to contact us:
------------------
If you want to contact Phagocytosis about any problems or ideas for Transistor then you can write to us at:
12 Forest Mead,
Eccleston,
St. Helens,
Merseyside.
WA10 5BU
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The | 00000540 20 74 6f 6f 6c 62 6f 78 65 73 20 74 6f 20 74 68 | toolboxes to th| 00000550 65 20 6c 65 66 74 20 61 6e 64 20 74 68 65 20 62 |e left and the b| 00000560 6f 74 74 6f 6d 20 6f 66 20 74 68 65 20 77 69 6e |ottom of the win| 00000570 64 6f 77 20 63 6f 6e 74 61 69 6e 20 76 61 72 69 |dow contain vari| 00000580 6f 75 73 20 63 6f 6d 70 6f 6e 65 6e 74 73 20 77 |ous components w| 00000590 68 69 63 68 20 63 61 6e 20 62 65 20 20 20 64 72 |hich can be dr| 000005a0 61 67 67 65 64 20 69 6e 74 6f 20 70 6c 61 63 65 |agged into place| 000005b0 20 6f 6e 20 74 68 65 20 64 69 61 67 72 61 6d 2e | on the diagram.| 000005c0 20 54 68 65 20 74 6f 6f 6c 62 6f 78 65 73 20 63 | The toolboxes c| 000005d0 61 6e 20 62 65 20 74 75 72 6e 65 64 20 6f 6e 20 |an be turned on | 000005e0 61 6e 64 20 6f 66 66 2e 0a 0a 54 68 65 20 74 6f |and off...The to| 000005f0 6f 6c 62 6f 78 20 6f 6e 20 74 68 65 20 6c 65 66 |olbox on the lef| 00000600 74 20 68 61 6e 64 20 73 69 64 65 20 6f 66 20 74 |t hand side of t| 00000610 68 65 20 77 69 6e 64 6f 77 20 63 6f 6e 74 61 69 |he window contai| 00000620 6e 73 20 69 6e 70 75 74 20 63 6f 6d 70 6f 6e 65 |ns input compone| 00000630 6e 74 73 3a 0a 0a 20 20 20 20 20 20 20 20 20 20 |nts:.. | 00000640 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c 44 | LD| 00000650 52 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |R | 00000660 20 20 20 20 54 68 65 72 6d 69 73 74 6f 72 0a 20 | Thermistor. | 00000670 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000680 20 20 20 20 20 20 20 56 61 72 69 61 62 6c 65 20 | Variable | 00000690 52 65 73 69 73 74 6f 72 20 20 20 20 20 4d 6f 69 |Resistor Moi| 000006a0 73 74 75 72 65 20 50 72 6f 62 65 0a 20 20 20 20 |sture Probe. | 000006b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000006c0 20 20 20 20 52 65 73 69 73 74 6f 72 20 20 20 20 | Resistor | 000006d0 20 20 20 20 20 20 20 20 20 20 53 77 69 74 63 68 | Switch| 000006e0 0a 0a 54 68 65 20 74 6f 6f 6c 62 6f 78 20 75 6e |..The toolbox un| 000006f0 64 65 72 20 74 68 65 20 77 69 6e 64 6f 77 20 63 |der the window c| 00000700 6f 6e 74 61 69 6e 73 20 6f 75 74 70 75 74 20 63 |ontains output c| 00000710 6f 6d 70 6f 6e 65 6e 74 73 3a 0a 0a 20 20 20 20 |omponents:.. | 00000720 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000730 20 20 20 20 4c 61 6d 70 20 20 20 20 20 20 4c 45 | Lamp LE| 00000740 44 20 20 20 20 20 20 42 75 7a 7a 65 72 0a 0a 54 |D Buzzer..T| 00000750 68 65 20 69 6e 70 75 74 20 63 6f 6d 70 6f 6e 65 |he input compone| 00000760 6e 74 73 20 63 61 6e 20 62 65 20 64 72 61 67 67 |nts can be dragg| 00000770 65 64 20 69 6e 74 6f 20 70 6c 61 63 65 20 6f 6e |ed into place on| 00000780 20 74 68 65 20 70 6f 74 65 6e 74 69 61 6c 20 64 | the potential d| 00000790 69 76 69 64 65 72 20 61 6e 64 20 74 68 65 20 6f |ivider and the o| 000007a0 75 74 70 75 74 20 20 20 20 20 20 20 63 6f 6d 70 |utput comp| 000007b0 6f 6e 65 6e 74 73 20 63 61 6e 20 64 72 61 67 67 |onents can dragg| 000007c0 65 64 20 69 6e 74 6f 20 70 6c 61 63 65 20 61 62 |ed into place ab| 000007d0 6f 76 65 20 74 68 65 20 74 72 61 6e 73 69 73 74 |ove the transist| 000007e0 6f 72 2e 0a 0a 54 68 65 20 72 65 73 69 73 74 61 |or...The resista| 000007f0 6e 63 65 20 6f 66 20 74 68 65 20 72 65 73 69 73 |nce of the resis| 00000800 74 6f 72 20 63 61 6e 20 62 65 20 63 68 61 6e 67 |tor can be chang| 00000810 65 64 20 62 79 20 63 6c 69 63 6b 69 6e 67 20 6f |ed by clicking o| 00000820 6e 20 74 68 65 20 63 75 72 72 65 6e 74 20 76 61 |n the current va| 00000830 6c 75 65 2c 20 61 20 63 61 72 61 74 20 20 20 20 |lue, a carat | 00000840 20 20 73 68 6f 75 6c 64 20 61 70 70 65 61 72 20 | should appear | 00000850 61 6e 64 20 79 6f 75 20 63 61 6e 20 64 65 6c 65 |and you can dele| 00000860 74 65 20 74 68 65 20 6f 6c 64 20 76 61 6c 75 65 |te the old value| 00000870 20 61 6e 64 20 65 6e 74 65 72 20 61 20 6e 65 77 | and enter a new| 00000880 20 72 65 73 69 73 74 61 6e 63 65 2e 0a 0a 59 6f | resistance...Yo| 00000890 75 20 63 61 6e 20 65 6e 74 65 72 20 72 65 73 69 |u can enter resi| 000008a0 73 74 61 6e 63 65 20 69 6e 20 61 6e 79 20 6f 66 |stance in any of| 000008b0 20 74 68 65 73 65 20 66 6f 72 6d 61 74 73 3a 0a | these formats:.| 000008c0 0a 20 20 20 20 20 20 20 20 31 30 30 20 20 20 2d |. 100 -| 000008d0 2d 20 31 30 30 20 6f 68 6d 73 0a 20 20 20 20 20 |- 100 ohms. | 000008e0 20 20 20 31 30 30 52 20 20 2d 2d 20 31 30 30 20 | 100R -- 100 | 000008f0 6f 68 6d 73 0a 20 20 20 20 20 20 20 20 31 30 30 |ohms. 100| 00000900 72 20 20 2d 2d 20 31 30 30 20 6f 68 6d 73 0a 20 |r -- 100 ohms. | 00000910 20 20 20 20 20 20 20 31 4b 20 20 20 20 2d 2d 20 | 1K -- | 00000920 31 30 30 30 20 6f 68 6d 73 0a 20 20 20 20 20 20 |1000 ohms. | 00000930 20 20 31 6b 20 20 20 20 2d 2d 20 31 30 30 30 20 | 1k -- 1000 | 00000940 6f 68 6d 73 0a 20 20 20 20 20 20 20 20 31 4d 20 |ohms. 1M | 00000950 20 20 20 2d 2d 20 31 30 30 30 30 30 30 30 20 6f | -- 10000000 o| 00000960 68 6d 73 0a 20 20 20 20 20 20 20 20 31 6d 20 20 |hms. 1m | 00000970 20 20 2d 2d 20 31 30 30 30 30 30 30 30 20 6f 68 | -- 10000000 oh| 00000980 6d 73 20 20 0a 0a 54 68 65 72 65 20 69 73 20 61 |ms ..There is a| 00000990 20 77 72 69 74 61 62 6c 65 20 69 63 6f 6e 20 61 | writable icon a| 000009a0 62 6f 76 65 20 74 68 65 20 63 69 72 63 75 69 74 |bove the circuit| 000009b0 20 64 69 61 67 72 61 6d 20 66 6f 72 20 79 6f 75 | diagram for you| 000009c0 20 74 6f 20 65 6e 74 65 72 20 61 20 74 69 74 6c | to enter a titl| 000009d0 65 20 66 6f 72 20 74 68 65 20 63 69 72 63 75 69 |e for the circui| 000009e0 74 20 20 69 6e 74 6f 2e 0a 0a 54 68 65 20 44 65 |t into...The De| 000009f0 73 69 67 6e 20 57 69 6e 64 6f 77 20 4d 65 6e 75 |sign Window Menu| 00000a00 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |.---------------| 00000a10 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 20 20 |-------. | 00000a20 43 6c 69 63 6b 69 6e 67 20 6f 6e 20 74 68 65 20 |Clicking on the | 00000a30 64 65 73 69 67 6e 20 4d 65 6e 75 20 77 69 74 68 |design Menu with| 00000a40 20 6d 69 64 64 6c 65 20 62 75 74 74 6f 6e 20 62 | middle button b| 00000a50 72 69 6e 67 73 20 75 70 20 61 20 6d 65 6e 75 3a |rings up a menu:| 00000a60 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. | 00000a70 20 0a 20 20 20 20 20 20 20 20 45 6e 74 65 72 20 | . Enter | 00000a80 20 20 89 20 20 3c 2d 2d 2d 20 4c 65 61 64 73 20 | . <--- Leads | 00000a90 74 6f 20 74 68 65 20 45 6e 74 65 72 20 73 75 62 |to the Enter sub| 00000aa0 6d 65 6e 75 0a 20 20 20 20 20 20 20 20 54 65 73 |menu. Tes| 00000ab0 74 20 20 20 20 20 20 20 3c 2d 2d 2d 20 43 6c 6f |t <--- Clo| 00000ac0 73 65 73 20 74 68 65 20 64 65 73 69 67 6e 20 77 |ses the design w| 00000ad0 69 6e 64 6f 77 20 61 6e 64 20 6f 70 65 6e 73 20 |indow and opens | 00000ae0 74 68 65 20 74 65 73 74 20 77 69 6e 64 6f 77 2e |the test window.| 00000af0 0a 20 20 20 20 20 20 80 20 54 6f 6f 6c 62 6f 78 |. . Toolbox| 00000b00 65 73 20 20 3c 2d 2d 2d 20 54 75 72 6e 73 20 54 |es <--- Turns T| 00000b10 68 65 20 74 6f 6f 6c 62 6f 78 65 73 20 6f 6e 20 |he toolboxes on | 00000b20 61 6e 64 20 6f 66 66 2e 0a 0a 54 68 65 20 65 6e |and off...The en| 00000b30 74 65 72 20 73 75 62 6d 65 6e 75 20 61 6c 6c 6f |ter submenu allo| 00000b40 77 73 20 79 6f 75 20 74 6f 20 65 6e 74 65 72 20 |ws you to enter | 00000b50 63 6f 6d 70 6f 6e 65 6e 74 73 20 77 69 74 68 6f |components witho| 00000b60 75 74 20 74 68 65 20 74 6f 6f 6c 20 62 6f 78 65 |ut the tool boxe| 00000b70 73 20 62 65 69 6e 67 20 70 72 65 73 65 6e 74 2e |s being present.| 00000b80 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. | 00000b90 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00000be0 20 20 20 20 20 20 52 31 20 20 20 20 20 89 20 20 | R1 . | 00000bf0 20 3c 2d 2d 2d 20 4c 65 61 64 73 20 74 6f 20 61 | <--- Leads to a| 00000c00 20 6c 69 73 74 20 6f 66 20 69 6e 70 75 74 20 63 | list of input c| 00000c10 6f 6d 70 6f 6e 65 6e 74 73 0a 20 20 20 20 20 20 |omponents. | 00000c20 20 20 52 32 20 20 20 20 20 89 20 20 20 3c 2d 2d | R2 . <--| 00000c30 2d 20 4c 65 61 64 73 20 74 6f 20 61 20 6c 69 73 |- Leads to a lis| 00000c40 74 20 6f 66 20 69 6e 70 75 74 20 63 6f 6d 70 6f |t of input compo| 00000c50 6e 65 6e 74 73 0a 20 20 20 20 20 20 20 20 4f 75 |nents. Ou| 00000c60 74 70 75 74 20 89 20 20 20 3c 2d 2d 2d 20 4c 65 |tput . <--- Le| 00000c70 61 64 73 20 74 6f 20 61 20 6c 69 73 74 20 6f 66 |ads to a list of| 00000c80 20 6f 75 74 70 75 74 20 63 6f 6d 70 6f 6e 65 6e | output componen| 00000c90 74 73 0a 0a 54 6f 20 65 6e 74 65 72 20 61 20 74 |ts..To enter a t| 00000ca0 68 65 72 6d 69 73 74 6f 72 20 69 6e 74 6f 20 52 |hermistor into R| 00000cb0 31 2c 20 66 6f 72 20 65 78 61 6d 70 6c 65 2c 20 |1, for example, | 00000cc0 79 6f 75 20 77 6f 75 6c 64 20 63 68 6f 6f 73 65 |you would choose| 00000cd0 20 27 54 68 65 72 6d 69 73 74 6f 72 27 20 66 72 | 'Thermistor' fr| 00000ce0 6f 6d 20 74 68 65 20 6c 69 73 74 20 6f 66 20 20 |om the list of | 00000cf0 20 69 6e 70 75 74 20 63 6f 6d 70 6f 6e 65 6e 74 | input component| 00000d00 73 20 66 6f 72 20 52 31 2e 0a 20 20 20 20 20 20 |s for R1.. | 00000d10 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000d20 0a 54 68 65 20 54 65 73 74 20 57 69 6e 64 6f 77 |.The Test Window| 00000d30 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |.---------------| 00000d40 0a 20 20 20 20 20 20 20 20 59 6f 75 20 63 61 6e |. You can| 00000d50 20 6f 70 65 6e 20 74 68 65 20 74 65 73 74 20 77 | open the test w| 00000d60 69 6e 64 6f 77 20 62 79 20 63 68 6f 6f 73 69 6e |indow by choosin| 00000d70 67 20 27 54 65 73 74 27 20 66 72 6f 6d 20 74 68 |g 'Test' from th| 00000d80 65 20 44 65 73 69 67 6e 20 57 69 6e 64 6f 77 20 |e Design Window | 00000d90 4d 65 6e 75 2e 20 4f 6e 63 65 20 79 6f 75 20 6f |Menu. Once you o| 00000da0 70 65 6e 20 74 68 65 20 74 65 73 74 20 77 69 6e |pen the test win| 00000db0 64 6f 77 20 69 74 20 62 65 63 6f 6d 65 73 20 74 |dow it becomes t| 00000dc0 68 65 20 63 75 72 72 65 6e 74 20 77 69 6e 64 6f |he current windo| 00000dd0 77 2c 20 73 6f 20 69 66 20 79 6f 75 20 63 6c 6f |w, so if you clo| 00000de0 73 65 20 69 74 20 75 73 69 6e 67 20 74 68 65 20 |se it using the | 00000df0 63 6c 6f 73 65 20 69 63 6f 6e 20 79 6f 75 20 63 |close icon you c| 00000e00 61 6e 20 74 68 65 6e 20 6f 70 65 6e 20 69 74 20 |an then open it | 00000e10 61 67 61 69 6e 20 62 79 20 63 6c 69 63 6b 69 6e |again by clickin| 00000e20 67 20 6f 6e 20 74 68 65 20 69 63 6f 6e 20 6f 6e |g on the icon on| 00000e30 20 74 68 65 20 69 63 6f 6e 62 61 72 2e 0a 20 20 | the iconbar.. | 00000e40 20 20 20 20 20 20 54 68 65 20 74 69 74 6c 65 20 | The title | 00000e50 66 6f 72 20 74 68 65 20 63 69 72 63 75 69 74 2c |for the circuit,| 00000e60 20 61 73 20 73 70 65 63 69 66 69 65 64 20 69 6e | as specified in| 00000e70 20 74 68 65 20 64 65 73 69 67 6e 20 57 69 6e 64 | the design Wind| 00000e80 6f 77 2c 20 69 73 20 73 68 6f 77 6e 20 69 6e 20 |ow, is shown in | 00000e90 74 68 65 20 74 69 74 6c 65 20 20 62 61 72 20 6f |the title bar o| 00000ea0 66 20 74 68 65 20 54 65 73 74 20 57 69 6e 64 6f |f the Test Windo| 00000eb0 77 2e 0a 20 20 20 20 20 20 20 20 54 68 65 20 74 |w.. 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