Computer Guides: Hardware, File Preservation, and Computing Explained

Choose and maintain useful computers, preserve your files, and understand how computing systems work. These 28 guides connect everyday tasks and computing history with examples, primary sources, and ways to check the result.

Personal computers and workspaces

A navy desktop tower shows a CPU cooling block, two hoses, and a top-mounted radiator through its side panel.

Alienware PC Cooling: Airflow, Liquid Coolers, and Service Decisions

Identify your cooling assembly, compare repeatable workload observations, and plan model-specific Alienware service.

An opened laptop chassis and removed keyboard sit beside separate memory and storage modules.

Modular PCs: Evaluate Repairability and Upgrade Options

Evaluate replaceable components, documented compatibility, complete upgrade costs, and the checks needed after a repair.

A laptop on a riser sits above a separate keyboard and mouse at an uncluttered desk.

Laptop Desks: Set Up a Stable, Comfortable, Ventilated Workspace

Arrange laptop screen height, typing controls, stability, and ventilation around the person and the task.

An open navy backpack holds a laptop in a padded compartment beside a sleeve, charger, and cable pouch.

Laptop Bags: Measure Fit, Compare Protection, and Pack Well

Measure your laptop and bag compartment, evaluate padding and closures, and test the complete carried load.

A tablet showing an architectural sketch rests on a stand beside a stylus and separate keyboard.

Tablet PCs: Choose Pen Input, Applications, and a Mobile Workflow

Choose a tablet PC by checking application support, pen compatibility, display conditions, and a complete document workflow.

A slim laptop and a separate tent-mode convertible stand beside a stylus and USB-C cable.

HP Spectre Laptops: Identify Your Generation and Assess a Used Device

Identify an HP Spectre generation, inspect a used laptop, test its accessories, and resolve repair and operating-system requirements.

Field work and wearable computing

A reinforced field laptop, dock, and battery sit beside glass panels suggesting outdoor conditions.

Rugged Laptops: Test Evidence, Field Requirements, and Buying Decisions

Match rugged laptops to working conditions, assess model-specific test reports, and run a practical acceptance trial.

A reinforced navy tablet displays an abstract map beside a tethered stylus, scanning accessory, and dock.

Rugged Tablet PCs: Test Offline Work, Capture, and Field Handover

Run a field-tablet acceptance trial covering applications, accessories, offline records, synchronization, and handover.

A head-mounted display rests on an ivory head form beside a wrist terminal on a separate pedestal.

Wearable Computers: Choose a Workflow and Run a Useful Pilot

Evaluate wrist and head-mounted computers with task trials that measure correctness, time, comfort, and record delivery.

A rugged navy laptop sits beside a docking cradle, spare battery, and blank inspection card.

Panasonic Toughbook: Identify the Model, Check Support, and Plan Service

Identify a Panasonic Toughbook, check batteries and accessories, verify software support, and keep a useful ownership and service record.

A reinforced notebook sits on a service bench near tools, with a parked van in the background.

Semi-Rugged Notebooks: Match Protection to a Field-Service Day

Match a semi-rugged notebook to a field-service route, compare protection evidence, and run a practical shift trial.

Files, discs, and home media

Optical discs in upright cases stand above a portable disc drive and two separate storage devices.

How Long CDs and DVDs Last: Check, Copy, and Preserve Your Files

Preserve files on aging optical discs with a copying workflow, verification tool, and a plan for independent copies.

A conceptual robotic disc publisher holds a silver disc between two stacks, with two labeled discs in cases nearby.

CD/DVD Disc Publishers: Prepare, Verify, and Reconcile a Batch

Plan a disc-publishing run with an approved master, matching labels, verification, recipient testing, and accepted-copy counts.

A television showing teal mountains sits beside a mini PC, storage device, speakers, and a remote control.

Media-Center PCs: Plan Storage, Playback, and a Reliable Setup

Plan local playback or a media server, test codecs and clients, estimate storage, and troubleshoot television playback.

Network clients, servers, and computing projects

A compact circuit board, ventilated enclosure, and power supply are arranged on an ivory work surface.

Single-Board Computers: Choose Hardware and Build a Working System

Choose a single-board computer using software, interfaces, power, storage, and cooling requirements, then validate the assembled system.

A monitor and small desktop client sit beside a network switch with a server cabinet in the background.

Network Clients: Thin Clients, Remote Desktops, and Terminal Workflows

Map applications and peripherals to a network client, test session recovery, and evaluate the complete service.

Four compact compute nodes are connected to a switch beside a storage unit.

Cluster Computing: Workloads, Scaling, and Measured Performance

Determine when multiple computers help, calculate speedup and efficiency, and design a repeatable cluster benchmark.

Three navy compute nodes connect through teal cables to an ivory network switch, with a second switch behind.

High-Speed Cluster Interconnects: Measure Latency, Bandwidth, and Useful Work

Choose relevant network benchmarks, calculate communication costs, and test whether an interconnect improves the real application.

Two navy modular server enclosures and a separate power module stand on ivory plinths.

Dense Blade Servers: Plan Power, Cooling, and Capacity After Failure

Evaluate blade-server density through complete infrastructure budgets, shared dependencies, and useful capacity after a specified failure.

A navy server and key form stand beside three glass panels representing audit records.

Solaris Security: Inventory, Review Evidence, and Validate Changes

Plan an Oracle Solaris 11.4 security review covering update level, roles, services, monitoring evidence, and recoverable changes.

A conceptual carrier circuit board holds smaller modules beside two separate cards and a blade chassis.

BladeCenter Carrier Blades: AdvancedMC Architecture and Legacy Compatibility

Understand the SBS BCT4-AMC1 and document legacy BladeCenter compatibility across chassis, modules, interfaces, management, and software.

Computing architecture explained

Conceptual spacecraft electronics sit under glass beside a Mars globe and an orbiting-spacecraft model.

Computers on Mars: Radiation, Redundancy, and Communication Delay

Understand Mars flight computers through mission tasks, radiation effects, recovery, and the time required for communication.

An architectural chip model places one ivory control block beside eight teal compute blocks and a separate memory slab.

The Cell Processor: Local Memory, Data Movement, and Parallel Work

Understand Cell’s heterogeneous architecture with a local-store budget, an illustrative pipeline, and the context of Roadrunner.

A conceptual lattice of navy, teal, and amber spheres sits under glass beside a separate control block.

Quantum Computers: Qubits, Error Correction, and Evidence

Understand physical and logical qubits, interpret error-correction results, and evaluate quantum-computing claims in context.

An avionics enclosure with separate glass compartments stands beside a small aircraft model.

Avionics Computers: Real-Time Work, Partitioning, and Assurance

Understand avionics deadlines, time and memory partitioning, fault response, and the evidence behind integrated modular avionics.

Computing history and design

Explore the machines, engineering decisions, and creative designs that shaped computing, with primary records and practical ways to interpret them.

A workstation, server, and network switch occupy three museum-like display plinths.

Computer Guides: Hardware, File Preservation, and Computing Explained - Yenra