Library - Holy Grail

Home Library PracticeNew Pricing FAQ Contribute Leaderboard

Holy Grail is a completely free-to-access web library aimed at Singaporean students that houses all the summary notes and practice papers for GCE 'O' Levels, GCE 'A' Levels and International Baccalaureate.

Information

Home Library FAQ Google Drive

Legal

Privacy Policy Terms of Service

Contribute

Upload Leaderboard

© 2023 - 2026 Holy Grail Team • Questions? Contact us at allthingsholygrail@gmail.com, or join our Telegram channel!

Practice is new on Holy Grail. Your 20 free practice credits are already waiting. They never expire and no card is needed.

Start practicing

Turis VPN

Library

Category

Subject

Year

Document Type

Document Name

Document Name

Unit 14 Voltage Comparators, Timers, Counters (Handwritten)

Category

GCE 'O' Levels

Subject

Electronics

Type

Notes/Practices

Year

—

Uploaded By

Amspy

Uploaded On

26 April 2026

Document Name

Unit 13 Set-Reset Latches (Handwritten)

Category

GCE 'O' Levels

Subject

Electronics

Type

Notes/Practices

Year

—

Uploaded By

Amspy

Uploaded On

26 April 2026

Document Name

Unit 12 Combinational Logic Circuits (Handwritten)

Category

GCE 'O' Levels

Subject

Electronics

Type

Notes/Practices

Year

—

Uploaded By

Amspy

Uploaded On

26 April 2026

Document Name

Unit 11 Basic Logic Gates (Handwritten)

Category

GCE 'O' Levels

Subject

Electronics

Type

Notes/Practices

Year

—

Uploaded By

Amspy

Uploaded On

26 April 2026

Document Name

Unit 10 Digital Electronics (Handwritten)

Category

GCE 'O' Levels

Subject

Electronics

Type

Notes/Practices

Year

—

Uploaded By

Amspy

Uploaded On

26 April 2026

Document Name

Unit 9.2 Operational Amplifiers (Handwritten)

Category

GCE 'O' Levels

Subject

Electronics

Type

Notes/Practices

Year

—

Uploaded By

Amspy

Uploaded On

26 April 2026

Document Name

Unit 7 Semiconductor Diodes (Handwritten)

Category

GCE 'O' Levels

Subject

Electronics

Type

Notes/Practices

Year

—

Uploaded By

Amspy

Uploaded On

26 April 2026

Document Name

Unit 6 Capacitors (Handwritten)

Category

GCE 'O' Levels

Subject

Electronics

Type

Notes/Practices

Year

—

Uploaded By

Amspy

Uploaded On

26 April 2026

Document Name

Unit 6 Capacitors (Handwritten)

Category

GCE 'O' Levels

Subject

Electronics

Type

Notes/Practices

Year

—

Uploaded By

Amspy

Uploaded On

26 April 2026

Document Name

SASS Prelim 2024

Category

GCE 'O' Levels

Subject

Electronics

Type

Exam Papers

Year

2024

Uploaded By

E6063

Uploaded On

2 November 2025

Page 1 of 2