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Hardware and software planning and evaluation

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Hardware and software planning and evaluation

  1. 1. HARDWARE PLANNING AND EVALUATION
  2. 2. POWERPOINT OUTLINE
  3. 3. HARDWARE CONSISTS OF THE PHYSICAL DEVICES ASSOCIATED WITH A COMPUTER SYSTEM.
  4. 4. COMPUTER HARDWARE- REFERS TO THE PHYSICAL PARTS OF A COMPUTER AND RELATED DEVICES. INTERNAL HARDWARE DEVICES INCLUDE MOTHERBOARDS, HARD DRIVES, AND RAM. EXTERNAL HARDWARE DEVICES INCLUDE MONITORS, KEYBOARDS, MICE, PRINTERS, AND SCANNERS.
  5. 5. SIX HARDWARE COMPONENTS 1 . C P U - C E N T R A L P R O C E S S I N G U N I T - T H E A C T U A L H A R D W A R E T H A T I N T E R P R E T S A N D E X E C U T E S T H E P R O G R A M ( S O F T W A R E ) I N S T R U C T I O N S A N D C O O R D I N A T E S H O W A L L T H E O T H E R H A R D W A R E D E V I C E S W O R K T O G E T H E R .
  6. 6. 2. PRIMARY STORAGE IS THE C O M P U T E R ’ S M A I N M E M O RY, W H I C H C O N S I S T S O F T H E R A N D O M A C C E S S M E M O RY ( R A M ) , C A C H E M E M O RY, A N D T H E R E A D - O N LY M E M O RY ( R O M ) T H AT I S D I R E C T LY A C C E S S I B L E TO T H E C P U .
  7. 7. 3 . S E C O N D A RY S TO R A G E C O N S I S T S O F E Q U I P M E N T D E S I G N E D TO S TO R E L A R G E V O L U M E S O F D ATA F O R L O N G - T E R M S TO R A G E . S E C O N D A RY S TO R A G E D E V I C E S A R E N O N V O L AT I L E A N D D O N O T L O S E T H E I R C O N T E N T S W H E N T H E C O M P U T E R I S T U R N E D O F F. S O M E S TO R A G E D E V I C E S , S U C H A S A
  8. 8. 4 . I N P U T D E V I C E I S E Q U I P M E N T U S E D T O C A P T U R E I N F O R M A T I O N A N D C O M M A N D S .
  9. 9. 6 . C O M M U N I C A T I O N D E V I C E I S E Q U I P M E N T U S E D T O S E N D I N F O R M A T I O N A N D R E C E I V E I T F R O M O N E L O C A T I O N T O A N O T H E R .
  10. 10. MAJOR HARDWARE EVALUATION FACTORS
  11. 11. HARDWARE DECISION Modularity/ expandabity Ergonomics Software availability Vendor Cost Performance Compatibility
  12. 12. EVALUATING HARDWARE CAN BE A COMPLICATED PROCESS. FOR SCHOOL DISTRICTS WITH LARGE MAINFRAME COMPUTER SYSTEMS, ACQUIRING HARDWARE MEANS INVESTMENT OF MILLIONS OF DOLLAR FOR MANY YEARS IN A PARTICULAR VENDOR. IN THE PUBLIC SECTOR, ADMINISTRATORS WILL LIKELY USE COMPETITIVE BIDING PROCEDURES THAT MAY REQUIRE IDENTIFYING A FORMALIZED EVALUATION PROCEDURE TO PROSPECTIVE BIDDING. BACK
  13. 13. ARE VERY IMPORTANT FACTORS FOR LONG- RANGE PLANNING. MODULARITY, REFERS TO THE INTERCHANGEABILITY OF COMPONENTS OR PARTS OF A HARDWARE SYSTEM. EXPANDABILITY, IS THE ABILITY OF COMPUTER HARDWARE TO GROW OR EXPAND AS A NEW APPLICATIONS ARE DEVELOPED OR AS OLD APPLICATIONS BECOME LARGER. TECHNOLOGY IS CONSTANTLY EVOLVING. TO EXPAND NEWLY PURCHASED EQUIPMENT SHOULD NOT REFLECT OLD TECHNOLOGY BEING PHASED OUT. Back

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