📙 Advanced (960~1050) | Why Does the iPad Only Work with Its Own Pencil?

아이패드는 왜 오직 전용 펜만 사용할 수 있을까?

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✔ 학습 목표

• 아이패드가 전용 펜만 인식하는 기술적 원리를 이해해요.
• 고급 문장 구조를 통해 기술 설명문을 읽는 능력을 키워요.
• 논리적 연결어, 현재완료, 관계절 구조를 중심으로 독해 연습해요.

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🔹 Reading Passage

Many touchscreen devices are designed to accept input from fingers or a wide range of third-party styluses. In contrast, the iPad operates exclusively with the Apple Pencil—a decision driven not merely by design preference, but by advanced engineering and strategic system integration.

The Apple Pencil establishes a high-bandwidth connection through Bluetooth, enabling it to transmit real-time data on pressure levels, tilt angles, and even writing dynamics. Simultaneously, the iPad screen incorporates a specialized array of capacitive sensors, calibrated to detect these signals with exceptional speed and accuracy. This dual mechanism allows for nuanced features such as palm rejection and tilt shading, which generic styluses are incapable of supporting due to hardware limitations.

Furthermore, Apple employs end-to-end encryption in the communication between the Pencil and the iPad. This ensures that only authorized, certified devices can access the full functionality of the system. By controlling both the hardware and software layers, Apple maintains a consistent user experience while protecting performance standards.

In essence, the incompatibility of third-party pens is not an oversight or restriction—it reflects Apple’s deliberate approach to optimizing its ecosystem through tightly coupled technological infrastructure.

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🔹 Reading Comprehension Question 1
Q1. Why does the iPad only support the Apple Pencil?
A. Because it looks better than other styluses
B. Because it avoids battery issues
C. Because of system-level integration and sensor design
D. Because Apple doesn’t allow drawing with fingers

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🔹 Reading Comprehension Question 2
Q2. What is one role of end-to-end encryption in this context?
A. It increases writing speed
B. It improves palm rejection
C. It limits access to certified devices only
D. It helps charge the Pencil faster

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🔹 Vocabulary Quiz
Q3. What does “capacitive sensor” most likely refer to?
A. A sensor that detects touch or pressure
B. A tool for cooling the device
C. A device for charging the screen
D. A type of screen protector

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🔹 Grammar Quiz
Q4. Choose the sentence that uses a reduced relative clause correctly:
A. The stylus which is designed for Android works poorly on iPad.
B. The stylus designed for Android works poorly on iPad.
C. The stylus is designed for Android works poorly on iPad.
D. The stylus designing for Android works poorly on iPad.

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🔹 어휘 정리표 (영영 + 한글)

영어 단어	영어 뜻	한글 뜻	예문
advanced engineering	complex and modern design techniques	고급 공학 기술	The iPad uses advanced engineering to detect pencil input.
system integration	combining parts to function as a whole	시스템 통합	Apple focuses on system integration for smooth performance.
capacitive sensor	a sensor that responds to electrical input	정전식 센서	Capacitive sensors allow the screen to detect fine movements.
Bluetooth	wireless data communication technology	블루투스	The Pencil uses Bluetooth to pair with the iPad.
pressure	the amount of force applied	압력	The Apple Pencil detects levels of pressure.
tilt	a slanted position or angle	기울기	Tilt detection helps with natural drawing.
palm rejection	ignoring hand contact when writing	손바닥 무시 기능	Palm rejection allows writing without interference.
encryption	secure coding of information	암호화	Apple uses encryption to keep the connection safe.
certified device	officially approved hardware	인증된 기기	Only certified devices can connect fully to the iPad.
technological infrastructure	the tech systems behind devices	기술 인프라	Apple builds its own technological infrastructure.

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✔ 정답 및 해설

• Q1 정답: C
  Apple Pencil is supported because of its integration with sensors and system-level design.
  🔻 A: 단순 외형 이유는 기술적 핵심과 무관함
  🔻 B: 배터리 문제와는 관련 없음
  🔻 D: 손가락 사용은 제한되지 않음
• Q2 정답: B
  암호화는 손바닥 인식 기능 등 정밀한 기능 구현에 도움을 줌
  🔻 A: 속도와는 무관
  🔻 C: 제한적 기능보단 정확한 작동을 위한 구조
  🔻 D: 충전과는 관련 없음
• Q3 정답: A
  정전식 센서는 터치나 압력을 감지하는 센서
  🔻 B, C, D: 오답 유도 distractor
• Q4 정답: B
  “The stylus designed for Android”는 관계절 축약 사용의 정확한 예시
  🔻 A: 관계절 축약 미적용
  🔻 C: 두 개의 동사 구조 오류
  🔻 D: 동명사 사용 부적절

✅ Extra Grammar Note:
Reduced relative clauses omit “which is/that is” + verb – 관계절 축약은 “which is”를 생략하고 과거분사 또는 현재분사로 표현해요.

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🔁 문법 복습 문제

Choose the correct reduced clause:
A. The pen using for notes is fast.
B. The pen designed for iPad is expensive.
C. The pen is designed for notes expensive.
D. The pen used for notes is fast.

정답: D

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💡 감성 마무리 문장
기술은 단순함 속에 숨겨진 정교함으로 우리 삶을 바꾸고 있어요.
우리가 그 원리를 이해할수록, 세상을 더 똑똑하게 바라볼 수 있어요.

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