Casio digital diaries are electronic organizer

Electronic organizer

An electric organizer is a small calculator-sized computer, often with an in-built diary application but few other functions such as an address book and calendar. It normally has a small alphanumeric keypad and an LCD screen of one, two or three lines....

s capable of storing hundreds or thousands of memo, address, and schedule records. They were produced by Casio

Casio

is a multinational electronic devices manufacturing company founded in 1946, with its headquarters in Shibuya, Tokyo, Japan. Casio is best known for its electronic products, such as calculators, audio equipment, PDAs, cameras, musical instruments, and watches...

in the early and mid 1990s, but have since been entirely superseded by Mobile Phones and PDA's.

Casio digital diaries hosted a common set of features while some have had extra features specific to the model.

Telephone directory

Enter the first letter of a name to recall the name in an instant (Initial Search). Data is sorted automatically in alphabetical order.

Memo function

Store text data such as price lists, airplane schedules, movies schedules, concert schedules, anniversaries, and more.

Secret memory area

The secret memory area keeps personal data private. Once a password is registered, data is locked away until the password is used to access the secret area.