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Additional info for The Essential guide to Timex/Sinclair home computers : the only book you'll ever need to become an expert at the Timex/Sinclair 1000 and 2000

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You don't have to key all the programs in the text into the computer, but you must understand them. However, you should key in all the shorter programs since it's important to see how different types of program operate in practice. Analysing the longer programs is vital, even if you don't key them in. The use of flowcharts (to come in Lesson G) is helpful for this. There are also suggestions for programs you should write, to get practice in writing programs to perform tasks, after units dealing with i) Lines that contain other line numbers must have these changed to their new numbers.

This will seem a bit pointless when you only have a dozen or so, but you will appreciate the need to be systematic when you accumulate a large number. PROGRAMS YOU WRITE WRITING ON THE CASSETTE There is a label on each side of the cassette. Write on each side: Cassette name or code. 1) 2) Date. Program names as they are copied into it. Make sure 3) these are correctly spelt! Your directory should provide you with the more detailed information, such as precisely where the program is to be found.

Programs can always be improved! Be careful when keying in programs, especially if you don't understand how they work. ) The S-cursor will mark some errors in lines for you and stop you entering them, but there are always other problems you can introduce. Check through your listing for errors and missing lines (surprisingly easy to do, even with numbered lines) before you run the program. You must also be careful to check that any necessary alterations have been made to the program if you are going to run it on a Spectrum, as noted in Unit W2.

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