Button is also tied to the X & Y of your device screen, not the graph screen. It works similar to the Menu function but you can only create one button at a time. To understand, let me explain.īutton creates a tappable button on the graph screen. For the aforementioned "Button" command, I took about 10 minutes before I followed the example set in the Catalogue description. Even then, learning how functions work will take some trial and error. These will tell you the basic syntax of the command while the catalogue will have a more detailed description which can also include errors and how to prevent them. There's also a really nifty feature that will show you the syntax of the function you are filling out, commonly known as tooltips. There's plenty of other uses for Debug as well! It helped me understand why certain lines of code were being skipped when they shouldn't have. It allows you step through your BASIC program and see the flow of your program. There's no search box to quickly find a program but there is a scrolling tag selection, just tap "Display All Programs" and you can then select a keyword to sort by. It'll allow you to find your programs much easier when you have a lot. As a bonus, you are able to provide tags, a description and, notes when creating your program. Over the few months I had the app and the long hiatus since I last used a calculator I didn't get very familiar with the layout and was quite slow in getting programs put together, a lot of my time was spent searching the catalog. Between the well documented syntax for each command and the spacious buttons on my iPhone 6, I didn't have too many issues. I find that it's easier to stare at the screen and type using the physical shapes and indentations of keys than tapping on a piece of glass. I generally find it really difficult to do a bunch of typing on a touch screen device. There is a solution in the form of a new token called "Button" that creates, obviously, a button that when touched jumps to the designated label. Also, the graph screen takes up the whole device making the traditional use of the graph screen obsolete for a game or, like my program, a utility you can't press the calculator buttons while viewing the graph screen. While porting one of my existing programs I found there is no method of setting the bounds of the graph screen: Xmin, Xmax, Ymin, and Ymax do not exist. However, there are inconsistencies with other parts of this virtual calculator. The good news is that the getKey values are the same as the the TI-83 family. I created a simple math app which loops until the correct answer is given and a program to check the getKey values. I've managed to create a few simple programs to get familiar with the app. I'll be reviewing this app on an iPhone 6 on iOS8, I did use it on an iPad as well. The app is a universal binary so it supports both the iPad and the iPhone/iPod. I was provided a gift code and invited to look at a TI-83/84 "Work-alike" clone, GraphnCalc83, for iOS.
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