Computer components PDF

Your Ideal Computing Device Moore’s Law (Objective 6.1) New technologies emerge quickly Things to consider –Speed –Moore’s Law –System components ▪DRAM ▪Hard drive Copyright © 2021 Pearson Education Ltd. Your Ideal Computing Device Sele...

Your Ideal Computing Device Moore’s Law (Objective 6.1) New technologies emerge quickly Things to consider –Speed –Moore’s Law –System components ▪DRAM ▪Hard drive Copyright © 2021 Pearson Education Ltd. Your Ideal Computing Device Selecting a Computing Device (Objective 6.2) Large number of choices –Smartphones –Tablets –Ultrabooks –2-in-1s –Laptops –Desktops Copyright © 2021 Pearson Education Ltd. Evaluating the CPU Subsystem How the CPU Works (2 of 6) (Objective 6.3) Copyright © 2021 Pearson Education Ltd. Evaluating the CPU Subsystem How the CPU Works (3 of 6) (Objective 6.3) Machine cycle –Fetch –Decode –Execute –Store Two units –Control unit –Arithmetic logic unit (ALU) Copyright © 2021 Pearson Education Ltd. Evaluating the CPU Subsystem How the CPU Works (4 of 6) (Objective 6.3) CPU’s processing power –Clock speed –Overclocking –Cores –Parallel processing –Cache memory Copyright © 2021 Pearson Education Ltd. Evaluating the CPU Subsystem Measuring CPU Performance (Objective 6.4) Copyright © 2021 Pearson Education Ltd. Evaluating the Memory Subsystem Random Access Memory (1 of 4) (Objective 6.5) Random access memory (RAM) –Short-term memory storage –Volatile storage Read-only memory (ROM) –Critical startup instructions –Nonvolatile storage Copyright © 2021 Pearson Education Ltd. Evaluating the Memory Subsystem Random Access Memory (2 of 4) (Objective 6.5) Copyright © 2021 Pearson Education Ltd. Evaluating the Memory Subsystem Random Access Memory (3 of 4) (Objective 6.5) Types of RAM –Double data rate 3 (DDR3) –Double data rate 4 (DDR4) –Double data rate 5 (DDR5) Memory modules Dual inline memory modules (DIMMs) Copyright © 2021 Pearson Education Ltd. Evaluating the Memory Subsystem Random Access Memory (4 of 4) (Objective 6.5) SuperFetch –Preloads often used programs into system memory Resource monitor –Displays how computer resources are being used Copyright © 2021 Pearson Education Ltd. Evaluating the Memory Subsystem Adding RAM (Objective 6.6) Limited to motherboard’s capacity Easy to install Copyright © 2021 Pearson Education Ltd. Evaluating the Storage Subsystem Types of Storage Drives (1 of 2) (Objective 6.7) Mechanical hard drives –Coated platters stacked on a spindle –Data saved as pattern of magnetized spots of 1s and 0s –Access time is the time it takes to find the data and make it available Copyright © 2021 Pearson Education Ltd. Evaluating the Storage Subsystem Types of Storage Drives (2 of 2) (Objective 6.7) Solid state drives –Fast access times –Generate little heat –Run with no noise –Require little power Solid state hybrid drives Copyright © 2021 Pearson Education Ltd. Evaluating the Storage Subsystem Storage Needs (1 of 3) (Objective 6.8) Copyright © 2021 Pearson Education Ltd. Evaluating the Storage Subsystem Storage Needs (2 of 3) (Objective 6.8) Redundant array of independent disks (RAID) –RAID 0 –RAID 1 Copyright © 2021 Pearson Education Ltd. Evaluating the Storage Subsystem Storage Needs (3 of 3) (Objective 6.8) Copyright © 2021 Pearson Education Ltd. Evaluating the Media Subsystems Video Cards (1 of 2) (Objective 6.9) Video display depends on two components –Video card –Monitor Ports –HDMI –DVI –DisplayPort adapter Copyright © 2021 Pearson Education Ltd. Evaluating the Media Subsystems Video Cards (2 of 2) (Objective 6.9) Video memory Screen Resolution –Found in Advanced Display Settings Graphics Processing Unit (GPU) Copyright © 2021 Pearson Education Ltd. Evaluating the Media Subsystems Sound Cards (Objective 6.10) Speakers and a sound card 3D sound technology Surround sound Dolby Digital 7.1 MIDI interface Copyright © 2021 Pearson Education Ltd. Evaluating System Reliability and Moving on Maintaining System Reliability (1 of 2) (Objective 6.11) Reliability –Install antivirus program –Install spyware and adware –Clear out unnecessary files –Run Disk Defragmenter –Automate key utilities Copyright © 2021 Pearson Education Ltd. Evaluating System Reliability and Moving on Maintaining System Reliability (2 of 2) (Objective 6.11) System crashes –Try System Restore –Check amount of RAM –Investigate any error codes –Search with Google –Consider Windows Reset Copyright © 2021 Pearson Education Ltd. Evaluating System Reliability and Moving on Getting Rid of Your Old Computer (1 of 2) (Objective 6.12) Copyright © 2021 Pearson Education Ltd. Evaluating System Reliability and Moving on Getting Rid of Your Old Computer (2 of 2) (Objective 6.12) Benefits of maintaining two systems Environmental impact –Mercury –Cadmium Donate –Remove all data before donating Copyright © 2021 Pearson Education Ltd.