This document discusses different types of RAM. It begins by introducing RAM as random access memory that can be accessed in any order and location. The two main types are static RAM (SRAM) and dynamic RAM (DRAM). SRAM is more expensive but has very low access times, while DRAM is lower cost but needs periodic refreshing. The document then describes different variants of DRAM over time that provide faster access, including FPM, EDO, SDRAM, DDR, DDR2 and RDRAM.
Here is a slide on Random Access Memory, slide consists of detailed presentation on primary Memory,types and history of RAM. Hope you will Enjoy the slide.
What is RAM? Why is it called Random Access Memory? What does Volatile & Non-Volatile Memory Means? What is SAM? Why is it called Sequential Access Memory? Other uses of RAM? What is Virtual Memory? What is RAM Disk? What is Shadow RAM?... By the end of this Presentation you will be able to answer these questions, so start Sliding the Slides!
Here is a slide on Random Access Memory, slide consists of detailed presentation on primary Memory,types and history of RAM. Hope you will Enjoy the slide.
What is RAM? Why is it called Random Access Memory? What does Volatile & Non-Volatile Memory Means? What is SAM? Why is it called Sequential Access Memory? Other uses of RAM? What is Virtual Memory? What is RAM Disk? What is Shadow RAM?... By the end of this Presentation you will be able to answer these questions, so start Sliding the Slides!
RAM(Random Access memory) is a volatile memory.RAM is our working memory storage. All the data, which the PC uses and works with during operation, are stored here. Data are stored on drives, typically the hard drive. However, for the CPU to work with those data, they must be read into the working memory storage, which is made up of RAM chips.
Historical review:
Back in the 80's, PC's were equipped with RAM in quantities of 64 KB, 256 KB, 512 KB and finally 1 MB. Around 1990, advanced operating systems, like Windows, appeared on the market, that started the RAM race. The PC needed more and more RAM. That worked fine with the 386 processor, which could address larger amount of RAM. The first Windows operated PC's could address 2 MB RAM, but 4 MB soon became the standard. The race has continued through the 90's, as RAM prices have dropped dramatically. Today it would be foolish to consider less than 64 MB RAM in a PC. The OS like windows Xp requires better than this.
ROM(Read Only Memory ) is computer memory on which data has been prerecorded. Once data has been written onto a ROM chip, it cannot be removed and can only be read.
A full ppt about computer memory.It will contain all data about computer memory like types of memory,ram and rom, types of ram and rom and cache memory.
RAM(Random Access memory) is a volatile memory.RAM is our working memory storage. All the data, which the PC uses and works with during operation, are stored here. Data are stored on drives, typically the hard drive. However, for the CPU to work with those data, they must be read into the working memory storage, which is made up of RAM chips.
Historical review:
Back in the 80's, PC's were equipped with RAM in quantities of 64 KB, 256 KB, 512 KB and finally 1 MB. Around 1990, advanced operating systems, like Windows, appeared on the market, that started the RAM race. The PC needed more and more RAM. That worked fine with the 386 processor, which could address larger amount of RAM. The first Windows operated PC's could address 2 MB RAM, but 4 MB soon became the standard. The race has continued through the 90's, as RAM prices have dropped dramatically. Today it would be foolish to consider less than 64 MB RAM in a PC. The OS like windows Xp requires better than this.
ROM(Read Only Memory ) is computer memory on which data has been prerecorded. Once data has been written onto a ROM chip, it cannot be removed and can only be read.
A full ppt about computer memory.It will contain all data about computer memory like types of memory,ram and rom, types of ram and rom and cache memory.
RAM (Random access memory) is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's processor.
The current technological revolution around the world has made the world faster with the
advancements in sophisticated computer devices. Computer, as a digital machine, enables people
to work faster than ever before. The memory of this device is a great feature of this digital tool.
RAM, Random Access Memory is the primary tool of data storage that is inserted in the
integrated circuit while data can be accessed in any sequence or randomly. Thus it is termed
RAM or Random Access Memory.
The journey of dynamic and static RAM was initiated in 1960s which can readily
developed in 1970s. Now a days the technology is much more user friendly. RAM is further
divided into three types:
• Dynamic RAM (DRAM)
• Static RAM (SRAM)
• Non-volatile RAM (NVRAM = RAM + Battery)
but we will discuss only first two i.e. (DRAM and SRAM).
Dynamic RAM is the most common memory used now a days. Inside of the RAM chip
there is a memory cell that holds one bit of information and is divided into further two parts: a
transistor and a capacitor. The capacitor holds the bit of information as a state of 0 or 1 and the
transistor acts as a switch that lets the control circuitry on the memory chip that reads the
capacitor or change its state. The capacitor is like a small bucket that stores the electrons in it. To
store 1, bucket gets filled with electrons and to store 0 buckets gets empty. The problem with the
capacitor’s bucket is that it has a leak and in a matter of few seconds a full buckets becomes
empty. Therefore they need to be recharged continuously in order to work properly and because
of this reason it has been given the name Dynamic RAM. This refreshing phenomenon is time
consuming as well.
In static RAM a flip-flop holds each bit of a memory. A flip-flop memory cell takes 4 to
6 transistors along with the wiring. Due to this reason they draws current all the time and gets
warm easily, therefore, they cannot be packed together tightly. They do not require any
refreshing method though, therefore, they are very fast memory chips.
The data storing capacity of a digital device is known as memory.
Memory of device like empty pages of note book.
Memory devices enables us to retrieve the stored data from the memory.
Examples are HDD, CD, DVD, pen drive, floppy disk, memory cards.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
3. Introduction
RAM “Random Access Memory” is a form of
data storage that can be accessed randomly at
any time, in any order and from any physical
location., allowing quick access.
RAM is volatile i.e. its contents are lost when
the device is powered off.
RAM allows the computer to read data quickly
to run applications. It allows reading and
writing.
4. RAM types
The two main types of RAM are static
RAM and dynamic RAM.
Static RAM (SRAM)
4 times more expensive
Very low access time .
Information stored on
RS flip-flops .
No need for refreshing .
They made of transistors
it is used in cache .
They can be either
Bipolar or MOS
technology .
Dynamic RAM (DRAM)
Low cost .
Consumes less power .
Information stored on
FET transistors .
Needs to be refreshed .
These are mostly made
of capacitors .
it is used in main
memory
These are available
only in MOS technology
6. FPM RAM
• Fast Page Mode Dynamic Random Access Memory
It was the original form of DRAM. It waits through the entire
process of locating a bit of data by column and row and then
reading the bit before it starts on the next bit. Maximum
transfer rate to L2 cache is approximately 176 Mbps.
7. EDO RAM
• Extended data-out Dynamic Random Access Memory
does not wait for all of the processing of the first bit before
continuing to the next one. As soon as the address of the first
bit is located, EDO DRAM begins looking for the next bit. It is
about five percent faster than FPM. Maximum transfer rate to
L2 cache is approximately 264 Mbps.
8. SDRAM
• Synchronous DRAM .
• SDRAM is a type of dynamic random access memory which is
synchronized with the clock speed that the microprocessor is
optimized for. SDRAM is about five percent faster than EDO
RAM and is the most common form in desktops today. Maximum
transfer rate to L2 cache is approximately 528 Mbps.
9. DDR RAM
• Double data rate synchronous dynamic RAM is just like
SDRAM except that is has higher bandwidth, meaning greater
speed. It is a newer variant of SDRAM. Maximum transfer rate
to L2 cache is approximately 1,064 Mbps .
10. DDR2 RAM
• Double Data Rate 2 .
• newer version of DDR .
• twice as fast as the original DDR RAM.
• 2003 .
• still is double data rate just like the original DDR.
• DDR2-RAM has modified signaling which enables higher
speeds to be achieved with more immunity to signal noise
and cross-talk between signals .
11.
12.
13. RDRAM
• Rambus dynamic random access memory : Designed by
Rambus, RDRAM uses a Rambus in-line memory module
(RIMM), which is similar in size and pin configuration to a
standard DIMM. RDRAM memory chips work in parallel to
achieve a data rate of 800 MHz, or 1,600 Mbps. Since they
operate at such high speeds, they generate much more heat
than other types of chips .
Dynamic RAM (DRAM)
The term "Fast Page Mode" comes from the capability of memory being able to access data that is on the same page.
486 and Pentium .
Extended Data Out DRAM
Once the required data is found the searching for the next bit will start
Output is about 264 Mbps .
refers to fact that the data output drivers on the memory module are not switched off when the memory controller removes the column address to begin the next cycle .
Synchronous DRAM
Once the first bit is found reads the data from the entire row. Relies on the fact that data is written in rows
Output is about 528 Mbps
SDRAM is capable of running at 133MHz which is about three times faster than FPM RAM and twice as fast as EDO RAM .
Double Data Rate SDRAM
Reads data from memory on the rising clock and falling clock signal. Allowing double capacity over SDRAM
Output is about 1064 Mbps
transfers data twice per clock cycle which effectively doubles the data rate .
become mainstream in the graphics card market and has become the memory standard.