To type in MCL Mangai, you generally cannot rely on the default Windows language bar alone, as that usually defaults to Unicode (Latha). You have two options:
The MCL Mangai layout is neither fully phonetic (unlike "Tamil Phonetic") nor purely positional (unlike "InScript"). It is a where vowels and consonants are assigned to keys based on a mix of logical mnemonics and frequency of use. mcl mangai tamil font keyboard layout
free MCL Mangai Tamil fonts download - MCL Mangai Tamil truetype font at Fonts101.com. Fonts101.com Instructions to install fonts - elections.tn.gov.in To type in MCL Mangai, you generally cannot