activitie 41:
♣ 41.- Think you want to print out a photograph with a size of DIN A4: 210 × 297 mm
maintaining a printing quality of 200 dpi. Which resolution would the image need?
Required resolution for A4 at 200 dpi
Step 1: Convert A4 size from mm to inches
1 inch = 25.4 mm
Width:
210/25.4 = 8.2677 in
Height:
297/25.4 = 11.6929 in
Step 2: Multiply each inch value by 200 dpi
Width:
8.2677 * 200 = 1653.5
Height:
11.6929 * 200 = 2338.6
Step 3: Round to whole pixels
→ Required resolution: 1654 × 2339 pixels
activitie 42:
♣ 42.- Which resolution would the same picture need to have a 300 dpi picture
Required resolution for A4 at 300 dpi
Step 1: Convert A4 size from mm to inches
(Same as 41)
Width: 8.2677 in
Height: 11.6929 in
Step 2: Multiply each inch value by 300 dpi
Width:
8.2677 \times 300 = 2480.3
Height:
11.6929 \times 300 = 3507.9
Step 3: Round to whole pixels
→ Required resolution: 2480 × 3508 pixels
Chart Digital Image Properties:
In this label we are going to explain what is a :
1 Raster Image
2Vector graphic
Their definitions, the most important key characteristics, and a image to see de differences.
Now to se the project up close click here and we can se
PROBLEM 1
I going to give you some tips to solve this problem:
1- Delete the email: Delete the message immediately to prevent accidentally opening it later.
2- Contact the company directly: If you think the request might be legitimate, contact the company using a phone number oall the customer service number on the back of your card.
3- Do not click links or download attachments: Opening attachments or clicking links can compromise your security and potentially install malware.
4-Block: Block the person thar send the email
5- Do not respond: Do not reply to the email or provide any informatior website you know is official, not one from the email itself. For example, if it appears to be from your bk, cann.
IF YOU CAN´T KNOW HOW TO SOLVE IT CLICK HERE TO INFORME
The problem: I have opened an email sent by a friend and clicked on a link that looked legitimate and harmless. Once i opened the attachment, it automatically downloads software to my computer. I do not know what has happened and how to fix it
Now im going togive you some tips to solve it
EXTERNAL PARTS
The keyboard is an input device that allows the user to enter text, numbers, and commands into the computer.
Types: membrane, mechanical, wireless, ergonomic.
Connection: USB or wireless (Bluetooth/2.4GHz).
Main function: send key signals to the system for processing.
The mouse is an input and pointing device used to move the cursor and interact with the graphical interface.
Types: optical, laser, wireless, gaming.
Buttons: usually left, right, and a scroll wheel.
Connection: USB or wireless.
The monitor is an output device that displays visual information generated by the computer’s graphics card.
Types: LCD, LED, OLED, curved, gaming.
Resolutions: HD, Full HD, 2K, 4K, or higher.
Connections: HDMI, DisplayPort, VGA, USB-C.
Speakers are audio output devices that convert digital sound signals into audible sound waves.
Types: stereo, 2.1/5.1 systems, Bluetooth, USB-powered.
Connection: audio jack, USB, or wireless.
Function: play system sounds, music, and multimedia audio.
POWER SUPPLY
The Power Supply Unit (PSU) is the component responsible for converting alternating current (AC) from the electrical outlet (110V or 220V) into direct current (DC) that the computer’s internal components need to operate.
Without it, no component (motherboard, CPU, GPU, drives, etc.) can function.
Power conversion:
Converts AC (alternating current) → DC (direct current).
Typically provides +12V, +5V, +3.3V (and sometimes −12V and +5VSB).
Voltage distribution:
Delivers power through different voltage rails to the motherboard, CPU, GPU, storage devices, and peripherals.
Electrical protection:
Includes built-in protection systems such as:
OCP (Over Current Protection)
OVP (Over Voltage Protection)
UVP (Under Voltage Protection)
OTP (Over Temperature Protection)
SCP (Short Circuit Protection)
A PSU contains several electronic modules:
EMI Filter: Removes electrical interference at the input and output.
Rectifier and PFC (Power Factor Correction): Improve electrical efficiency and stabilize input current.
Transformer: Converts high-voltage AC into lower-level DC.
Secondary Rectifiers: Convert the transformed signal into clean DC.
Regulators and Filters: Smooth out voltage to maintain stability.
Fan and Thermal Sensors: Regulate internal temperature.
The most common physical format.
Versions: ATX 2.3, 2.4, 3.0, and the newer ATX 3.1, which supports 12VHPWR connectors for modern GPUs.
Smaller units used in compact PCs (Small Form Factor).
Designed for specific case formats or server environments.
PSUs are rated by 80 PLUS efficiency certifications, indicating how efficiently they convert power:
| Certification | Approx. Efficiency |
|---|---|
| 80 PLUS White | 80% |
| 80 PLUS Bronze | 82–85% |
| 80 PLUS Silver | 85–88% |
| 80 PLUS Gold | 87–90% |
| 80 PLUS Platinum | 90–92% |
| 80 PLUS Titanium | 92–94% |
The wattage determines how much power the PSU can deliver.
Basic PCs: 400–550 W
Mid-range gaming: 600–750 W
High-end gaming / workstations: 850–1200 W
Servers or multi-GPU setups: >1200 W
The most important factor is not just total wattage, but the quality and stability of the 12V rail, which powers the CPU and GPU.
Inkscape flags: In this activity, we're going to learn how to use a new application called Inkscape, where we can create and edit drawin...
