Walter is a cad.
“GaAs FET”. Gallium-arsenide field-effect transistor. “Ga” and “As” are the chemical symbols for gallium and arsenic, respectively, not abbreviations. FET is a regular abbreviation for “field-effect transistor”.
[sub]Not only am I a style stickler, I took electronics too![/sub]
GaAs FET is Boba Fett’s annoying little nephew. He messed with capitalization because he thinks it makes him look cool. His sister MOSFET just squished her whole name together. It was actually their father, who started the whole thing when he formally changed his name from Jay Fett to JFET (I think he was inspired by J-LO). He likes to call his wife CNTFET, but that usually gets him slapped.
[Apostrophe Nazi] Grammar is style that I tell you is correct. [/Apostrophe Nazi]
Malacandra I am so embarrassed. To atone for my mistake I will have to have you taken out and shot.
Unnecessary. I am a good Nazi and it will be enough for you to show me into a private room where there is a brandy snifter and a loaded Luger. Make sure it is good brandy, please.
You must have got a lot of as in school.
At least in English class. Maybe you got bs and cs in History and Science.
I’d write that as As Bs and Cs.
I got As in Science and BS in History. 
I call BS!
In my opinion, only if you say it that way, too. The reason for moving the apostrophe at the end is to show that you left out a sound.
Also, it would be as, bs, etc.
¿Büt why woüld Ü not have any Ümlaúts for yoür Üs?
Üsüࣣ¥ th饒rê ࣣ iñ üsé
Mÿ Ǚmlaǚts gṏ ṳp tṏ ëḮęvēň.
An umlaut makes “u” smile and “o” laugh; who doesn’t like letters that look at you so friendly?
Trivia: the term “Umlaut” was coined by Jacob Grimm - one half of the brotherly team that collected the well-known fairy tales.
It always looks weird to me to see the plural as umlauts in English, but it makes sense, of course: “Umlaute” would add another irregular plural.
And Malacandra, well played.