An electronic book (variously, e-book, ebook, digital book, or even e-editions) is a book-length publication in digital form, consisting of text, images, or both, and produced on, published through, and readable on computers or other electronic devices. Sometimes the equivalent of a conventional printed book, e-books can also be born digital. The Oxford Dictionary of English defines the e-book as "an electronic version of a printed book," but e-books can and do exist without any printed equivalent. E-books are usually read on dedicated e-book readers. Personal computers and some mobile phones can also be used to read e-books.

The inventor and the title of the first e-book is not widely agreed upon. Some notable candidates are listed here.

The first e-book may be^{[according to whom?]} the Index Thomisticus, a heavily annotated electronic index to the works of Thomas Aquinas, prepared by Roberto Busa beginning in the late 1940s. However, this is sometimes omitted, perhaps because the digitized text was (at least initially) a means to developing an index and concordance, rather than as a published edition in its own rights.

Arnold Clavio (born November 2, 1965) is a popular radio and television newscaster, journalist, and a TV host in the Philippines. He currently co-anchors GMA Network's late-night newscast, Saksi with Vicky Morales and hosts a morning radio show, One on One with Igan on DZBB.

In his elementary and high school days, he has been an active member of the editorial staff of his school's organ. In college, he took up Journalism in the UST Faculty of Arts and Letters or UST-AB.

Right after graduation, he worked as a news writer at DWIZ, and after a year transferred as a radio field reporter to GMA Network's flagship radio station, DZBB.

In 1994, he was offered a reporter's slot in Brigada Siete, joining the late Louie Beltran and Jessica Soho, this was Igan's very 1st TV show on GMA.

He was given the top prize by the Department of Health in their Philippine AIDS-STD Media Awards for his report on Sarah Jane Salazar in 1995. The Asian Broadcasting Union also awarded his Abu Sayyaf coverage for DZBB as the Best Reportage of a Crisis in the same year. In 1999, his radio program Dobol A sa Dobol B was named Best Public Affairs Program on Radio by the KBP Golden Dove Awards.