Statements (19)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | 
                                    
                                        
                                            gptkb:personal_computer
                                        
                                         gptkb:electromechanical_computer  | 
                            
| gptkbp:countryOfOrigin | 
                                    
                                        
                                            gptkb:United_States
                                        
                                         | 
                            
| gptkbp:designer | 
                                    
                                        
                                            gptkb:Howard_Aiken
                                        
                                         | 
                            
| gptkbp:developedBy | 
                                    
                                        
                                            gptkb:Harvard_University
                                        
                                         | 
                            
| gptkbp:input | 
                                    
                                        
                                            
                                            punched cards
                                        
                                        
                                         | 
                            
| gptkbp:location | 
                                    
                                        
                                            gptkb:Harvard_University
                                        
                                         | 
                            
| gptkbp:memoryType | 
                                    
                                        
                                            
                                            magnetic drum memory
                                        
                                        
                                         | 
                            
| gptkbp:notableFeature | 
                                    
                                        
                                            
                                            first Harvard computer to use magnetic drum memory
                                        
                                        
                                         fully electronic design  | 
                            
| gptkbp:output | 
                                    
                                        
                                            
                                            punched cards
                                        
                                        
                                         | 
                            
| gptkbp:predecessor | 
                                    
                                        
                                            gptkb:Harvard_Mark_III
                                        
                                         | 
                            
| gptkbp:successor | 
                                    
                                        
                                            gptkb:Harvard_Mark_V
                                        
                                         | 
                            
| gptkbp:technology | 
                                    
                                        
                                            
                                            electronic
                                        
                                        
                                         | 
                            
| gptkbp:usedFor | 
                                    
                                        
                                            
                                            scientific calculations
                                        
                                        
                                         | 
                            
| gptkbp:yearCompleted | 
                                    
                                        
                                            
                                            1952
                                        
                                        
                                         | 
                            
| gptkbp:bfsParent | 
                                    
                                        
                                            gptkb:Harvard_Mark_I
                                        
                                         | 
                            
| gptkbp:bfsLayer | 
                                    
                                        
                                            
                                            5
                                        
                                        
                                         | 
                            
| https://www.w3.org/2000/01/rdf-schema#label | 
                                    
                                        
                                            
                                            Harvard Mark IV
                                        
                                        
                                         |