IBM GA21-9151-0 3740 3741 3742 Reference Manual Jan73 free download

File name GA21-9151-0_3740_3741_3742_Reference_Manual_Jan73.pdf

GA21-9151-0 IBM 3740 Data Entry System IBM 3741 Data Station IBM 3742 Dual Data Station Systems Reference Manual Preface ( This publication is a reference manual for customer appli- cations personnel and key entry supervisory personnel who wish specific information about the IBM 3741 Data Station and the IBM 3742 Dual Data Station. Information in this manual pertains to both the 3741 and 3742 unless specified otherwise. Chapter 1 presents a gen- eral overview of the 3740 system and the 3741 and the 3742, listing the standard functions and features available. Chapter 2 presents information about the IBM Diskette. Chapter 3 deals with operating characteristics in terms of data flow, modes of operation, disk unit, and buffers. Chapter 4 defines the display unit and the keyboard. Chap- ters 5 through 12 ~eal with specific details about functions and features, and programming information required by them. Appendix A gives a list of possible error codes, their causes, and possible recoveries. First Edition (January 1973) Changes are continually made to the specifications herein; any such changes will be reported in subsequent revisions or Technical Newsletters. A Reader's Comment Form is at the back of this publication. If the form is gone, address your comments to IBM Corporation, Publications, Department 245, Rochester, Minnesota 55901.