1100 Ch01: PC Parts and Electrical Safety

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Questions and Answers

What is the primary purpose of grounding electrical equipment?

To enhance the operational speed of devices

To increase power consumption

To improve the aesthetic looks of the equipment

To provide a path for electrical current to flow safely (correct)

What minimum voltage level must static electricity reach before a person can feel it?

1,000 volts

3,000 volts (correct)

5,000 volts

10,000 volts

What is the primary function of a CD-RW?

It can only be written once.

It can store data that cannot be modified.

It can be written, erased, and rewritten multiple times. (correct)

It is used primarily for video storage.

Which of the following practices can help prevent electrostatic discharge (ESD) damage?

Using antistatic wrist straps Signup and view all the answers

What defines the M.2 standard?

It specifies physical aspects such as connectors and dimensions of expansion cards. Signup and view all the answers

Why should one not exchange AC adapters between different types of devices?

It can cause damage to both the adapter and the device Signup and view all the answers

What is the recommended action to discharge static electricity before handling electronic components?

Touching a grounded object Signup and view all the answers

Which of the following storage formats allows data to be written once and read multiple times?

CD-R Signup and view all the answers

What is the storage capacity of a single-layer BD-ROM?

25 GB Signup and view all the answers

Which type of disc format can be rewritten multiple times and offers random access capability?

DVD-RAM Signup and view all the answers

What does the term 'form factor' refer to in the context of desktop computers?

The physical design and appearance of the device Signup and view all the answers

Which of the following is NOT a type of desktop computer case form factor?

Ultra Slim Signup and view all the answers

What is the primary purpose of fans in a desktop computer case?

To cool the internal components by moving air Signup and view all the answers

Which power supply type is prevalent in modern desktop computers?

ATX12V Signup and view all the answers

Which voltage is typically used to run motors in disk drives and fans?

12 volts Signup and view all the answers

What is the primary function of the Southbridge on a motherboard?

To enable communication with slower speed devices Signup and view all the answers

What is the size of an ATX motherboard?

305 x 244 mm Signup and view all the answers

How many PCIe slots are typically available on a Micro-ATX motherboard?

4 PCIe slots Signup and view all the answers

Which motherboard form factor is most suitable for high-end gaming PCs due to its extensive features?

ATX Signup and view all the answers

What is the primary use case for Mini-ITX motherboards?

Compact, portable systems and minimalist builds Signup and view all the answers

Which motherboard form factor offers the most expansion options?

ATX Signup and view all the answers

How many RAM slots do ATX motherboards typically have?

4 or more Signup and view all the answers

What is the size of a Micro-ATX motherboard?

244 x 244 mm Signup and view all the answers

What is a feature of Mini-ITX motherboards?

Focuses on space efficiency Signup and view all the answers

What is the typical number of RAM slots in a Mini-ITX motherboard?

2 Signup and view all the answers

Study Notes

Electrical Safety Guidelines

Adhere to electrical safety guidelines to prevent fires, injuries, and fatalities.
High-voltage components in printers can retain charge even when powered off.
Review the printer manual for the location of these components.
Using the incorrect AC adapter for devices can lead to damage.
Proper grounding of electrical equipment is crucial to safely redirect any electrical faults.
Electrostatic discharge (ESD) can damage electronic components and happens when charged surfaces contact differently charged surfaces.

ESD Prevention

Static electricity builds up to 3,000 volts before a person feels the discharge; over 10,000 volts can cause pain.
Less than 30 volts is sufficient to damage computer components.
Self-grounding can be achieved by touching a grounded object before interacting with electronic equipment.
Store components in antistatic bags until installation, use grounded mats and wrist straps during work to reduce ESD risk.

Computer Cases

Computer cases protect and cool internal components such as power supplies and motherboards.
Common case materials include plastic, steel, and aluminum.
Various desktop computer form factors include horizontal cases, full-size towers, compact towers, and all-in-one cases, each offering unique designs and functionalities.

Power Supply Fundamentals

Computers convert alternating current (AC) from wall outlets into direct current (DC) required by internal components via a power supply.
Common power supply form factors include AT, AT Extended (ATX), ATX12V, and EPS12V.
Voltages typically supplied include 3.3V, 5V, and 12V for various component functions.

Motherboard Form Factors

AT form factor is large, suited for desktop systems with high space requirements.
ATX (305x244 mm) offers multiple expansion options for high-end gaming and workstations.
Micro-ATX (244x244 mm) balances size and expandability, ideal for mid-range PCs.
Mini-ITX (170x170 mm) focuses on compact designs, suitable for small form factor builds.

Optical Drive Formats

Optical storage devices such as CDs, DVDs, and Blu-ray discs provide various storage capacities:
- CD-ROM: Up to 700 MB, read-only.
- CD-R: Up to 700 MB, recordable once.
- CD-RW: Up to 700 MB, rewritable multiple times.
- DVD-ROM: 4.7 GB (single-layer) or 8.5 GB (dual-layer), read-only.
- DVD-RAM: 4.7 GB (single-sided), rewritable.
- Blu-ray formats include BD-ROM (25 GB), BD-R (25 GB), and BD-RE (25 GB), with read and write capabilities.

Video Ports and Cables

Video ports connect monitors to computers, transmitting analog or digital signals.
DVI connectors come in types like DVI-I (supports digital and analog) and DVI-D (digital only).
DVI technology is becoming less common as HDMI becomes the standard.

Adapters and Converters

Adapters connect different technologies physically, like DVI to HDMI types.
Converters translate signals from one technology to another, such as USB to SATA.

Output Devices

Output devices convert binary information into user-understandable forms, including monitors, projectors, and printers.
Monitor technologies include:
- LCD: Two polarizing filters with a liquid crystal solution.
- LED: LCD with LED backlighting, offering better efficiency and performance.
- OLED: Features organic materials that emit light, allowing for deeper blacks and richer colors.

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Description

Test your knowledge on electrical safety guidelines to prevent fires, injuries, and fatalities. This quiz covers crucial topics such as high voltage components, safe handling of electrical devices, and the importance of using the correct AC adapters.