The OnTyme electronic mail service made available to library and information community by CLASS (a cooperative library services agency) is discussed as example of computer-based message system. Use of system by Dynamic Services to support internal and external communications needs and receive orders is highlighted. Examples of online sessions are…

School districts can obtain computer services with purchase, lease, or network options. The advantages and disadvantages of each are explained. Guidelines are offered for assessing needs and determining costs of computer services. (MLF)

Local area networks (LAN) are privately owned communication systems that connect multivendor devices at high speed. As microcomputers become more common in schools, user interest in sharing information, software, and peripherals will increase. A basic understanding of the operation of all LAN's can be gained by knowing four elements: media,…