The open university <br/><br/>
Unit 14 The PDP 11 computer systems unit 15 operating systems/ 
The Open University  
 - New York  The open university press   1983 
 - 45 p.; 
<br/><br/>Introduction (Page-7),  PDP 11 Computer Sys (Page-7), PDP 11 Computer Hardware (Page-12), Input And Output Of Data (Page-21), Software For PDP 11 Computers (Page-40).  
<br/><br/><label>ISBN: </label>0335171222 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating system
<br/><br/><label>Dewey Class. No.: </label>005.43,OPE