Bootstrap  Process

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This is the process of loading and executing the basic instructions to load the operating system to bring the system to a fully functional state  to be used for its intended purpose (initiated either by the user powering on the system or an autonomous system system e.g a network device , typically a router. See wake on lan)  .  For modern day systems, these instructions are usually hardcoded in the EEPROM.

Updates to this post

2023-09-15 – Added wake on LAN, and detailed to the initiation of the device.

© 2022  Vedesh Kungebeharry. All rights reserved. 

Form 5 Spreadsheet feedback groups 3 to 7 (18th Jan 2022)

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See the video of feedback for all groups today (Groups 1 and 2 will be completed next class)

Group 1: https://youtu.be/5MTsBwK8x6w?t=329

Group 2: https://youtu.be/5MTsBwK8x6w?t=369

Group 3: https://youtu.be/5MTsBwK8x6w?t=445

Group 4: https://youtu.be/5MTsBwK8x6w?t=1208

Group 5: https://youtu.be/5MTsBwK8x6w?t=1629

Group 6: https://youtu.be/5MTsBwK8x6w?t=2307

Group 7: https://youtu.be/5MTsBwK8x6w?t=2889

Full Class Video:

© 2022  Vedesh Kungebeharry. All rights reserved. 

NCSE ICT – Scratch Programming – Creating interactive sprites

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In this example, we create a sprite which asks for you to enter a subject mark and tells you the grade.

Grade ranges are shown below:

A76 to 100
B50 to 75
C40 to 49
DFail

We will be using a variable to store the users input.

Also, we will used some “if” blocks and logical operators to produce the grade.

See the blocks in the project below:

https://scratch.mit.edu/projects/629271195

Exercise

If someone enters an erroneous mark, e.g 1000 , the program dosen’t say anything to the user.

Copy or remix the project and Add blocks to say “you’ve entered an incorrect mark” if the user enters a mark higher than 100 or a mark less than 0.

(Hint: an IF block and an OR logical operator may be useful for solving this problem!)

© 2022  Vedesh Kungebeharry. All rights reserved. 

NCSE ICT – Scratch Programming – Animating Sprites using loops and the Broadcast system

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See the examples below on how animation can be achieved by switching costumes using loops:

Sprite Animation 1 – Walk in place

Sprite Animation 2 Glide

Sprite Animation 3 – Walk and glide

Exercise

  1. After looking at the blocks in the project above, create a similar animation using a different sprite.
  2. Describe in your own words how the broadcast and receive blocks work.

© 2022  Vedesh Kungebeharry. All rights reserved.