What are servers? This is an animated video explaining the difference between servers and desktop computers. This video also explains the difference between Xeon server CPUs and Intel core desktop CPUs.
This is just a compilation of my computer explanation videos.
0:00 — Computer Components Rundown
7:38 — Graphics Cards
11:14 — Hard Drives
16:47 — Disk Fragmentation
19:21 — RAM
23:59 — Monitors
31:03 — Binary
37:36 — Voltage States
42:41 — Mouse
46:46 — The Internet
Individual videos can be found under the «Tech Videos» playlist on my channel.
We are finally getting to the end of progression in silicon technology. What will replace silicon? This video covers some of the potentials of future computing architecture.
The rapid expansion of software from simple text-based tools to massively complex, feature-rich, highly visual products would dominate the mass-market computing world during the 1980s and 90s. And with this push, came a higher demand on processors to both efficiently utilize more memory and grow in computing power, all while keeping costs at consumer accessible levels.
RISE OF 32-BIT
During the mid-1980s, in response to the growing demands of software, the opening moves towards the mainstream adoption of 32-bit processor architecture would begin. While 32-bit architectures have existed in various forms as far back as 1948, particularly in mainframe use, at the desktop level only a few processors had full 32-bit capabilities. Produced in speeds ranging from 12Mhz to 33Mhz, the 68020 had 32 bit internal and external data buses as well as 32-bit address buses. It’s arithmetic logic unit was also now natively 32-bit, allowing for single clock cycle 32-bit operations.
One year later, Intel would introduce its own true 32-bit processor family, the 80386. Not only did it offer a new set of 32-bit registers and a 32-bit internal architecture, but also built-in debugging capabilities as well as a far more powerful memory management unit, that addressed many of the criticisms of the 80286.
This allowed most of the instruction set to target either the newer 32-bit architecture or perform older 16-bit operations. With 32-bit architecture, the potential to directly address and manage roughly 4.2 GB of memory proved to be promising. This new scale of memory addressing capacity would develop into the predominant architecture of software for the next 15 years.
On top of this, protected mode can also be used in conjunction with a paging unit, combining segmentation and paging memory management. The ability of the 386 to disable segmentation by using one large segment effectively allowed it to have a flat memory model in protected mode. This flat memory model, combined with the power of virtual addressing and paging is arguably the most important feature change for the x86 processor family.
PIPLINING
CPUs designed around pipelining can also generally run at higher clock speeds due to the fewer delays from the simpler logic of a pipeline’s stage. The instruction data is usually passed in pipeline registers from one stage to the next, via control logic for each stage.
Data inconsistency that disrupts the flow of a pipeline is referred to as a data hazard. Control hazards are when a conditional branch instruction is still in the process of executing within the pipeline as the incorrect branch path of new instructions are being loaded into the pipeline.
One common technique to handle data hazards is known as pipeline bubbling. Operand forwarding is another employed technique in which data is passed through the pipeline directly before it’s even stored within the general CPU logic. In some processor pipelines, out-of-order execution is use to helps reduce underutilization of the pipeline during data hazard events.
Control hazards are generally managed by attempting to choose the most likely path a conditional branch will take in order to avoid the need to reset the pipeline.
CACHING
In caching a small amount of high-speed static memory, is used to buffer access to a larger amount of lower-speed but less expensive, dynamic memory.
A derived identifier, called a tag, that points to the memory region the block represents, amongst all possible mapped regions it can represent, is also stored within the cache block. While simple to implement, direct mapping creates an issue when two needed memory regions compete for the same mapped cache block.
When an instruction invokes memory access, the cache controller calculates the block set the address will reside in and the tag to look for within that set. If the block is found, and it is marked as valid, then the data requested is read from the cache. This is known as a cache hit and it is the ideal path of memory access due to its speed. If the address cannot be found within the cache then it must be fetched from slower system memory. This is known as a cache miss and it comes with a huge performance penalty as it can potentially stall an instruction cycle while a cache update is performed.
Writing data to a memory location introduces its own complication as the cache must now synchronize any changes made to it with system memory. The simplest policy is known as a write-through cache, where data written to the cache is immediately written to system memory. Another approach known as write-back or copy-back cache, tracks written blocks and only updates system memory when the block is evicted from the cache by replacement.
We use touchscreen displays for hours every day, but do you know about all the intricate layers and components that make them work? This episode goes into the structure and basic function of a touchscreen display. What goes into making toughened glass strong, how do capacitive touchscreens work, and how do OLEDs work? The merging of these technologies is what arguably makes the smartphone what it is! Take a look and learn more.
Do you want to support in-depth engineering and technology education? Join the Branch Education community on our Patreon page found here: www.patreon.com/brancheducation
We need more engineers throughout the world, and to do that we need better engineering education!
Table of Contents:
00:53 The Layers
01:35 Section 1: Toughened Glass
03:18 Section 2: Capacitive Touchscreen
05:07 Section 3: OLED Display
07:18 Section 4: Summary
07:48 Section 8: Outro
Key Branches from this video are: Multitouch, Electric Fields, Capacitors, OLEDs, LCDs, Material Transparency, Interface Aesthetics
Lets build a circuit that displays an image on a VGA monitor! In this video, I talk about how VGA signals work and build a circuit that provides the correct timing of sync signals so that a monitor recognizes the signal.
Special thanks to these supporters for making this video possible:
Ben Dyson
Ben Kamens
Ben Williams
Christopher Blackmon
Debilu Krastas
Eric Dynowski
fxshlein
Gonzalo Belascuen
Ian Tait
Jay Binks
Jayne Gabriele
Johnathan Roatch
Jordan Scales
Manne Moquist
Marcus Classon
Michael Burke
Mirko Rener
Nicholas Moresco
Nick Wrightsman
Onion Sniffer
Paul Pluzhnikov
Randy True
Ric Allinson
Robert Butler
Sachin Chitale
SonOfSofaman
Vladimir Kanazir
Örn Arnarson
Special thanks to these supporters for making this video possible:
Alex Catchpole
Armin Brauns
BakerStaunch
Beau-James Erion
Ben
Ben Dyson
Ben Kamens
Ben Williams
Bradley Pirtle
Christopher Blackmon
Clayton Parker Coleman
Daniel Tang
Dean Winger
Debilu Krastas
Dominic Kulmer
Dušan Dželebdžić
Eric Brummer
Eric Dynowski
Erik Broeders
Eugene Bulkin
fxshlein
HaykH
Ian Tait
Ivan Sorokin
JavaXP
Jay Binks
Jayne Gabriele
Jefferson Hunt
Jimmy Campbell
Joel Messerli
Joel Miller
Jordan Scales
Joshua King
Justin Duch
Kent Collins
Manne Moquist
Marcus Classon
Mats Fredriksson
Michael
Michael Burke
Michael Garland
Miguel Ríos
Nathan Wachholz
Nicholas Moresco
Onion Sniffer
Paul Pluzhnikov
Peter Simard
Randy True
Robert Butler
Sachin Chitale
Sergey Ten
SonOfSofaman
Stefan Nesinger
Stephen Smithstone
Steve Gorman
Thomas Ballinger
Vladimir Kanazir
xisente
Örn Arnarson
Software and technology has changed every aspect of the world we live in. At one extreme are the ‘mission critical’ applications — the code that runs our banks, our hospitals, our airports and phone networks. Then there’s the code we all use every day to browse the web, watch movies, create spreadsheets… not quite so critical, but still code that solves problems and delivers services.
But what about the code that only exists because somebody wanted to write it? Code created just to make people smile, laugh, maybe even dance? Maybe even code that does nothing at all, created just to see if it was possible?
Join Dylan Beattie — programmer, musician, and creator of the Rockstar programming language — for an entertaining look at the art of code. We’ll look at the origins of programming as an art form, from Conways Game of Life to the 1970s demoscene and the earliest Obfuscated C competitions. We’ll talk about esoteric languages and quines — how DO you create a program that prints its own source code? We’ll look at quine relays, code golf and generative art, and we’ll explore the phenomenon of live coding as performance — from the pioneers of electronic music to modern algoraves and live coding platforms like Sonic Pi.
Было ли вам когда-нибудь трудно что-либо найти или понять, где установлены программы в Linux? Вот объяснение, для чего все эти папки и что в них находится!
Поддержать меня на Patreon: www.patreon.com/doriandotslash
Music by MrGamer (@AndreasRohdin): soundcloud.com/gamermachine
A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially single-user computers, such as servers. The system administrator seeks to ensure that the uptime, performance, resources, and security of the computers they manage meet the needs of the users, without exceeding a set budget when doing so.
To meet these needs, a system administrator may acquire, install, or upgrade computer components and software; provide routine automation; maintain security policies; troubleshoot; train or supervise staff; or offer technical support for projects
Introduction to System Administration and IT Infrastructure Services
Course Introduction
What is Systems Administration?
Servers Revisited
The Cloud
Systems Administration Tasks
Organizational Policies
IT Infrastructure Services
User and Hardware Provisioning
Routine Maintenance
Vendors
Troubleshooting and Managing Issues
In Case of Fire, Break Glass
What are IT Infrastructure Services?
The Role of IT Infrastructure Services in SysAdmin
Types of IT Infrastructure Services
Server Operating Systems
Virtualization
Remote Access Revisited
Network Services
FTP, SFTP, and TFTP
NTP
Network Support Services Revisited
DNS
DNS for Web Servers
DNS for Internal Networks
DHCP
Troubleshooting Network Services
LectureUnable to Resolve a Hostname or Domain Name
Software Services
Configuring Communication Services
Configuring Email Services
Configuring User Productivity Services
Configuring Security Services
Heather Managing Self Doubt
File Services
What are file services?
Network File Storage
Print Services
Configuring Print Services
Platform Services
Web Servers Revisited
What is a database server?
Is the website down?
Introduction to Directory Services
What is a directory server?
Implementing Directory Services
Centralized Management
What is centralized management?
LDAP
What is LDAP?
What is LDAP Authentication?
Heather Overcoming Obstacles
Active Directory
What is Active Directory?
Managing Active Directory
Managing Active Directory Users and Groups
Joining an Active Directory Domain
What is Group Policy?
Group Policy Creation and Editing
Group Policy Inheritance and Precedence
Group Policy Troubleshooting
What is OpenLDAP?
Managing OpenLDAP
Planning for Data Recovery
LectureWhat is Data Recovery?
Backing Up Your Data
Backup Solutions
Testing Backups
Types of Backup
User Backups
Disaster Recovery Plans
Whats a Disaster Recovery Plan?
Designing a Disaster Recovery Plan
*******************************************************************
Credit: The creator of this contents is Google.
License: Creative Commons Attribution-ShareAlike 4.0 International License
You can take this professional certificate here: www.coursera.org/specializations/google-it-support
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