it needs to let me insert my own words, latin, and english, then ask me them and have a dont know button and if i dont know it tells me, then i will be able to learn the much more easily and effectively.
use a continuity tester on the switch itself just hold contacts on tester to contacts on switch and if it reads with a beep or a light your switch is good pending the tester is accurate
Vocabulary is the basis of language. Your vocabulary is simply the number of words that you know. The bigger your vocabulary, the better you will be able to communicate, and to understand. Reading is one good way to improve your vocabulary.
Crash Dummy
Here's a good website about 19th Century Sailors with a good vocabulary section.
To increase your vocabulary, try a dictionary.
look in the dictionary
An analog oscilloscope.
flow and vocabulary
Electronic Scrabble or crosswords are great for expanding a vocabulary.
To get a new tester you could try amazon or maybe eBay or you could even try craigslist. those are all good places to try.
It is always better to do practice than only reading. You will find some good quality SAT Vocabulary practice test and Free Sat Vocabulary Test at Skill-Guru
If you master vocabulary and syntax you can be a good writer.