Krane's Digital Systemz

04/10/2024

Follow our official to get updates on digital products...... https://www.facebook.com/profile.php?id=61566457802057

05/12/2023

Welcome to Krane's Digital Systemz.......Your home of DIgital Solutions!

24/04/2022

Say good bye to overheating in your Laptop. Get this cool digital USB laptop cooler now!

The product is extracted from the vents in the notebook computer hardware comes out of the heat, so that the rapid flow of air inside the computer, so as to achieve the purpose of rapid cooling. The product is a new notebook cooling equipment,it is more scientific and more efficient when compared to...

24/04/2022

Get this awesome smart phone charging kit at an awesome price...

Say goodby to cluttered cables and crowded outlets stuffed with chargers...the Simicore Charging Station For Multiple Devices keeps everything in one place—nice, clean and organized! Featuring 4 slots and 4 USB ports that can hold and charge up to 4 devices simultaneously, the Simicore Charging St...

24/04/2022

Do you ever worry if your phone is unsafe, poorly charged and insecure, if so get this digital phone box instantly!

Most of our phones are filthy. The PhoneSoap 3 UV Smartphone Sanitizer & Universal Charger can fix that. Two scientifically proven germicidal UV-C bulbs completely sanitize your entire phone, safely killing 99.99% of all bacteria and germs, even in crevices where cleaning wipes can't reach. PhoneSoa...

24/04/2022

Protect your office, home and family with this digital pro monitoring device...

Life moves fast. Your security camera should too! With the Wyze Cam Indoor Smart Home Camera w/Night Vision, you'll be able to view any room using 110-degree per second rotation speed in a FULL 360-degree horizontal range and 93-degree vertical range in under 3 seconds...so you can see exactly what....

24/04/2022

Get this super cool i watch...

Meet the Fitbit Versa 3 Smartwatch, a fitness companion that elevates every moment. Track your pace & distance and leave your phone at home with built-in GPS. Use your voice to create alarms, set bedtime reminders, or check the weather with Amazon Alexa built-in—all from your wrist. Its sleek, mod...

15/06/2017

Quick Review

Hardware Components
Microprocessors
--
"The brain of the computer“
- PCs primarily use microprocessors (sometimes called the chip).
The older Intel versions include the 386, 486 and now the Pentium
line.

The
CPU (Central Processing Unit)
is normally an Intel
Pentium (or equivalent) and it is one of the most important
components within your computer.
It determines how fast your computer will run and is
measured by its MHz(megahetz) speed.
Thus a 600 MHz Pentium is much faster than say a 400
MHz Pentium CPU.
It is the CPU that performs all the calculations within the
computer.

Hardware Components
Some of the Factors
That Impact on a Computer's Performance
CPU speed
RAM size
Hard disk speed and capacity

15/06/2017

QUICK REVEIW

Hardware Components
How Computer Memory Is Measured

Bits:

All computers work on a binary numbering system, i.
e. they
process data in one's or zero's. This 1 or 0 level
of storage is
called a bit.

Byte:
A byte consists of eight bits.

Kilobyte
A kilobyte (KB) consists of 1024 bytes.

Megabyte
A megabyte (MB) consists of 1024 kilobytes.

Gigabyte
A gigabyte (GB) consists of 1024 megabytes.

15/06/2017

QUICK REVIEW

Main Parts of Computer
Memory
--
"How the processor stores and uses
immediate data“

RAM - Random Access Memory
The main 'working' memory used by the computer.

When the operating system loads from disk when you
first switch on the computer, it is copied into RAM
As a rough rule, a Microsoft Windows based computer
will
operate faster if you install more RAM. Data and
programs stored in RAM are volatile (i.e. the information
is lost when you switch off the computer).

Hardware Components
Memory
ROM – Read Only Memory
Read Only Memory (ROM) as the name suggests is a special
type of memory chip that holds software that can be
read
but not written to.
A good example is the ROM-BIOS chip, which contains
read-only software.
Often network cards and video cards also contain ROM
chips.

15/06/2017

QUICK REVIEW

Hardware Components
Hard Disks
Speed:
Very fast!
The speed of a hard disk is often quoted as "averag
e
access time" speed, measured in milliseconds. The
smaller this number the faster the disk.
Capacity:
Enormous! Often 40/80 Gigabytes. A Gigabyte is
equivalent to 1024 Megabytes.
Cost:
Hard disks costs are falling rapidly and normally
represent the cheapest way of storing data.

Hardware Components
Diskettes (Floppy Disks)
Speed:
Very slow!
Capacity:
Normally 1.44 Mbytes.
Cost:
Very cheap.

Hardware Components
CD-ROM Disks
Speed:
Much slower than hard disks. The original
CD-ROM speciation is given a value of 1x
speed, and later, faster CD-ROMs are
quoted as a multiple of this value.
Capacity:
Around 650 Mbytes and more

Hardware Components
DVD Drives
Speed:
Much faster than CD-ROM drives but
not as fast as hard disks.
Capacity:
Up to 17 Gbytes.
Cost:
Slightly higher than CD-ROM drives.

15/06/2017

QUICK REVEIW

Hardware Components

Storage Devices --
"How it saves data and
programs“
- Hard disk drives are an internal,
higher capacity drive which also stores the
operating system which runs when you power
on the computer.
- "Floppy" disk drives allow you to save
work on small disks and take the data with
you.

Hardware Components
Hard Disks
Speed:
Very fast!
The speed of a hard disk is often quoted as "averag
e
access time" speed, measured in milliseconds. The
smaller this number the faster the disk.
Capacity:
Enormous! Often 40/80 Gigabytes. A Gigabyte is
equivalent to 1024 Megabytes.
Cost:
Hard disks costs are falling rapidly and normally
represent the cheapest way of storing data.

Hardware Components
Diskettes (Floppy Disks)
Speed:
Very slow!
Capacity:
Normally 1.44 Mbytes.
Cost:
Very cheap.

Hardware Components
CD-ROM Disks
Speed:
Much slower than hard disks. The original
CD-ROM speciation is given a value of 1x
speed, and later, faster CD-ROMs are
quoted as a multiple of this value.
Capacity:
Around 650 Mbytes and more

Hardware Components
DVD Drives
Speed:
Much faster than CD-ROM drives but
not as fast as hard disks.
Capacity:
Up to 17 Gbytes.
Cost:
Slightly higher than CD-ROM drives.