Information and Communication Technology - 4IT1 PearsonEdexcel

Memory

Gbogbo ọrọ náà

Every time you open an app, load a web page, or even switch on a calculator, the device is pulling instructions and data from its memory. Without memory, a processor would have nowhere to find the instructions it needs to carry out its tasks.

In this lesson you will explore the three types of memory that digital devices rely on: RAM, ROM, and flash memory. You will learn what makes each one different, why the size of RAM directly affects how smoothly your device runs, and where flash memory fits into modern portable technology.

Ebumnobi

Know that RAM stands for Random Access Memory and that ROM stands for Read Only Memory
Be able to describe the characteristics of RAM and ROM, the differences between them and the impact on the user of the size of ROM/RAM
Be able to describe the characteristics and uses of flash memory

Akọmọ Ojú-ẹkọ

When you tap an icon on your phone, the processor does not fetch the app straight from the hard drive. That would be far too slow. Instead, the app's instructions are loaded into memory first, where the processor can reach them almost instantly. Memory is the fast, temporary workspace that sits between long-term storage and the processor, and understanding how it works explains why some devices feel snappy while others stutter.

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese

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Ọ dị na Android, Windows, macOS, na Linux

Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Memory. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

Which of the following best describes RAM? A) Non-volatile memory that stores startup instructions B) Volatile memory that stores programs currently in use C) Permanent storage for files and documents D) Memory that can only be written to once Answer: B
What happens to the data stored in RAM when a computer is switched off? A) It is saved to the hard drive automatically B) It remains in RAM until the device is restarted C) It is lost D) It is transferred to ROM Answer: C
Which type of memory is used to store the startup instructions for a computer? A) RAM B) ROM C) Flash memory D) Virtual memory Answer: B
Flash memory is most similar to which type of ROM? A) PROM B) EPROM C) EEPROM D) Standard ROM Answer: C
A computer is running slowly because too many programs are open. Which component is most likely insufficient? A) ROM B) The processor C) RAM D) The hard drive Answer: C