Abstract: A compact electronic data retrieval device allowing access to compressed data stored on interchangeable ROM chips. The chips which can contain directories, manuals or other materials that may be available for convenient access. The chips which are not easily copied may be economically distributing. Interchangeability of the chips is enhanced by a novel chip replacement system. The chip replacement system enabling a precise and easy way for the user of an electronic device to change a computer chip which is utilized in the electronic device. The chip is mounted onto a removable door in a manner to ensure proper placement of the chip and that proper forces are utilized to fit it within a chip socket. This system is particularly applicable to electronic appliances where a computer chip is used to carry large amounts of data and replaced from time to time.