Of course, the answer is yes. For yesterday's post, I pretended I was using a dumb terminal that was so dumb, the only keys on it were the alphabet, a space bar, and an enter key. No numbers, no punctuation, no shift/ctrl/alt keys
Also no D key. I pretended it was missing, and invented an encoding for it as well. I used the letter X as an encoding delimiter, and I'm sure you noticed that my list of encodings and their meanings was the most readable thing in the post. Given the inclination, I'm sure
In fact, I later realized that even if your keyboard were reduced to three keys, you could still type in Morse code.
qwww wwq q wqq wwww ww qwqw wwww wq wqw w qww qqq q www wq qw qww wqq wwww ww qwqw wwww wq wqw w qww wq www wwww w www wwqqww
Or, if you only had two working keys (such as that time G and U were the only keys on Strong Bad's keyboard that worked (it's an Easter egg; wait till the end, then click the word 'other', and then click it again)), you could still type anything as long as you knew how to type in binary.
guguggugguugugguguugguuuguugugggguuugugg
Even if one of the two keys were the enter key, you could still type in binary; it would just waste a lot of screen space.
g
g
gg
g
ggggg
gggg
g
g
g
g
g
g
g
gg
gg
gggg
(BTW, I find it amusing that nobody asked where this broken terminal I was supposedly typing on was located, and that nobody noticed that I accidentally let a forbidden D slip in. It's near the beginning, even!)