Category Archives: General Article


One important concept in electronics is printed circuit boards or PCB. This we think is important to explain whether the PCB is. This article will explain about PCB Assembly from start to finish.

The Printed Circuit Board (PCB) is a copper board that serves to connect between components in electronic circuits. Before any PCB component is connected using a cable so it looks very unkempt.

Material and PCB Layers

PCB has various types of layers such as single-sided (single layer), double-sided (double layer). Double layer means there are two layers of copper in one PCB. Double layer PCB allows us to install more components in a small space. The upper and lower layers are connected through a hole called the plated-through hole.

Generally, there are two types of material in PCB namely FR4 and FR2. FR2 (Flame Resistant 2) is phenolic cotton paper, phenol formaldehyde, and has lower electrical properties than FR4. Usually used by consumers who want an affordable price. FR4 (Flame Resistant 4) is a fiberglass webbing coated with epoxy resin. It’s low water absorption, good insulation properties, and resistant to temperature 130 Celsius. Usually used by the electronics industry. The FR4 PCB layer has a thicker copper …

How much should you spend on external hard drives?

Standard hard drive storage just isn’t enough these days – with more and more of us using laptops to work remotely, and taking thousands of photos on our smart phones, external hard drives are becoming vital to move large digital files from place-to-place, or use to back up important date or priceless photos.

Even if you buy a to-of-the-range laptop, you’ll most likely find that storage space has been sacrificed for greater performance and portability – which is great for those times you have to cart your hardware around, but not so great when it comes to downloading images, movies, music, apps or any large files.

That’s where external hard drives come in handy – but how much storage do you need? And how much can you reasonably expect to pay?

Why do you need an external hard drive?

There are a number of reasons why storing files solely on your computer’s hard drive is a bad idea, but the two main issues are that you’ll lose everything if anything happens to your hardware, and using up all that storage space will significantly slow down your system.

What types of drives are available?

There are two main types of external …