Messengers, Morse code, and modems
By: by Janice Parker
Series: Science @ work; Science @ work (Austin, Tex.)
Publisher: Raintree Steck-Vaughn
Published: 2000
Place of publication: Austin, Tex
Language: eng
Number of pages: 48
ISBN-13: 9780739801383
Subjects: Communication; Juvenile literature; Telecommunication
Description: Discusses the development of various means of communication, from the printed word through telegraph and telephone to radio, television, and computers, examining the technology that has made communicating easier.
Notes: Includes bibliographical references and index.