Acronym to Remember Error-checking Methods

There is one person who can help you to remember the error-checking methods and they are Par Q. Checo. 
Par is the first name, Q is the middle initial, and Checo is the last name. 

'PAR Q. CHECO'

PARqcheco - parity check
pARQcheco - ARQ (Automatic Repeat Request)
parqCHEco - checksum
parqchECO - echo check

So remember, Par Q. Checo. 

I hope this helps!