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Category Archives: Laptop-Technologies

Benefits of Defragging of Hard Drives

Defragging or defragmenting hard drive on a regular basis increases the overall health and speed of computer system. Defragging is a process of reducing the amount of fragmentation. Fragmentation makes inefficient use of storage space, reducing storage capacity and performance of the hard drive.

How fragmentation happens?

When a new file is saved to a hard disk, it is placed in the free space at the end existing saved data till the hard disk is full or you delete some previous files. When a file is deleted from the hard disk, it leaves a free space. More files deleted, more free space is created. Over the time, free space is spread all over your hard drive in small amounts here and there, not in contiguous section in one spot. This stage is termed as disk fragmentation and here starts the problem, which also causes file fragmentation. File fragmentation means a single file isn’t located in the same physical location on the disk, but is scattered around. It slows down the speed of computer as it has to look in many different places to open a file.

What happens while defragging?

The process of defragging consolidates fragmented files on your computer’s hard disk.  It rearranges the data and reunites fragmented files on your hard disk to make it run efficiently.

Why is defragging of hard drives essential?

To improve the performance speed – Programs run faster and files loads quickly when the data is clubbed together. Quick access can be made when the data is grouped together as computer need not search the data all over the disk to perform a task.

To extend the life of hard drive – Mechanical parts of hard drive travel less when the disk is defragmented. A system needs to work hard to collect fragmented information across the disk. Defragmenting can help a hard drive last longer.

To obtain high level of security – Anti-virus program can scan files in small time when the drive and files are less fragmented. It can capture virus quickly and delete them before they spread.

To improve battery life – Since defragging simplifies the file retrieval function, the energy used also decreases.

 
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Posted by on March 28, 2012 in Laptop-Technologies

 

What is Mouse DPI?

Mouse DPI is the number of steps it reports while moving on one inch surface. Dot per inch (DPI) is actually the number of individual dots that can be placed in a line within the extent of one inch. It determines the sensitivity of mouse. Factually, the expression of movement of mouse in terms of DPI is incorrect. Correctly, it is expressed in counts per inch (CPI).

The higher the CPI, the faster the cursor moves with mouse movement. However, software can adjust the mouse sensitivity, making the cursor movement faster or slower than its CPI count.

DPI is fraction of an inch of mouse can count when a mouse moves. A mouse with 800 DPI can count up to 1/800 of an inch of movement while a mouse with 5000 can count up to 1/5000 of an inch. Better say, if a mouse has 4 CPI, it means mouse has to move four times for every inch it travel.

A standard mouse has DPI in range of 400-800 while it can go up to 10,000 in high end mouse. It is to be noted that DPI also depends on screen resolution. Higher the resolution of screen (number of dots/pixels on the entire screen), the curser will appear moving slower as it has more pixels to cross.  

 
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Posted by on March 23, 2012 in Laptop-Technologies

 

Ports and Slots in Laptops

A number of people overlook the importance of connectivity ports on the laptops while they are out to get a laptop for themselves. The reason is quite obvious; they just don’t understand how necessary these interfaces/ports are. And when they are done with the process of buying the laptop, the lack of relevant ports haunt them like ghosts.

In this article our aim is to give away some valuable information to the readers that will help them fathom the importance and relevance of the different ports that are found on the laptop bodies.

Expansion ports are different types of connection ports on a laptop that allow various kinds of external devices to be connected to the machine.  There are numerous types of connectivity ports from the most basic USB till the latest Express card slot. So, let’s begin to explore all of them without further ado.

USB Port : Among all the connectivity ports the USB port is the most widely used interface. The USB lets you connect several types of devices to your laptop such as external hard drives, pen drives, cameras, keyboard, mice etc. It also helps in charging mobile phones and such small devices as it supplies small amount of power the connected devices. When the standard USB version 2.0 offers a transfer speed of 480 Mbps, the latest version 3.0 offers higher speed of 5Gbps.

USB PortExpressCard Slot: ExpressCard slot is the largest Expansion slot on the body of your laptop. Devices might be plugged into the body of laptops via this slot. It allows devices like cellular broadband cards, memory cards, adapters, and network cards.

ExpressCard SlotThunderbolt Port: Thunderbolt port is a connectivity medium, which uses expansion bus to let the laptop be connected to the peripheral devices.  It has been developed by the tech giant Intel and brought into the market by the Apple Inc. Now other companies also sport this interface on their respective devices. 

Thunderbolt Port 

HDMI Port: HDMI or high definition multimedia interface is relatively a new induction to the new age gadgets. The HDMI port is a compact audio/video connector that helps us to connect the laptops, tablets, or mobiles to the newer and popular entertainment things like HD LCD or plasma TV or HD DVD or BlueRay players. And it will not be wrong to say that with the help of HDMI on our machines we can connect to any high end electronic entertainment gadget.

HDMI Port

Firewire/ IEEE 1394 port: Firewire is quite similar to the USB interface on all the fronts barring the technological one. It was first brought to light by Apple computers as the USB ports were lethargically slow at that time. Though, the USB 2.0 has, with its fast speed, has overwhelmed the Firewire a little bit but if it is inbuilt on your system it will only benefit you.

Firewire/IEEE 1394 portMemory Card Reader: Memory card reader is a slot, which is pretty common on modern day laptops as it allows you to insert any kind of memory card ranging from SD to XD to any other card like Sony Memory Stick into your system, hence better connectivity. Isn’t it a hassle-free method to transfer the pics from your camera by simply inserting the memory card  in the card reader? This way you can avoid connecting USB cables to transfer the files.  Some card readers even read 8 types of cards. It is a must on your system, readers.  

Memory Card Reader

VGA Connector: This is used to connect your system to any analog monitor or LCD TV. As we know that VGA is not a digital thing; it has been used to video connect devices for ages. It still remains relevant to the modern day laptops and is almost ubiquitous phenomenon.

VGA Connector

External SATA or External  Serial Advanced Technology Attachment: It is a means of faster data transfer.  It is a bus interface which is used to connect host BUS adapters to the mass storage devices such as hard disks. It holds many advantages over the old interfaces like more efficient and fast data transfer and reduced cable size because it uses only 7 conductors instead of 40. A must port for every laptop.

eSATA Port

RJ 45/Ethernet Port: RJ 45 is a jack standard registered for a modular connector that uses 8 conductors and is used to connect computers to a local area network (LAN) especially Ethernet. RJ 45 was previously a telephone thing standard. There was a time when it was considered indispensable but due to technological advances it has grown somewhat obsolete.


Modem Port:  At the first glance one might take the modem port for standard telephone jack, but it is not the same. It connects an internal modem of a computer to a telephone line.  And the modem of the system connects the computer to the internet by making a data call to a distant Internet Service Provider.

Modem Port

 
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Posted by on March 21, 2012 in Laptop-Technologies

 

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