The difference between high-level language and assembly language_machine language

High-level language, which is based on low-level language, uses words and symbols close to human natural language to represent a group of low-level language programs, making programming easier, easier to learn, and writing programs that are readable.

1. High-level language is close to the algorithm language, easy to learn, easy to master, general engineering and technical personnel can be competent for the programmer's work as long as a few weeks of training;

2. The high-level language provides the programmer with the environment and tools for structured programming, making the designed program readable, maintainable, and highly reliable;

3. High-level language is far from machine language and has little relationship with specific computer hardware. Therefore, the written program has good portability and high reuse rate.

Some high-level languages ​​write programs that are not efficient

Assembly language, which is a low-level language, uses a human-friendly language and symbols to represent a set of 0 and 1 codes. For example, AND stands for addition.

1. Explain how the program interfaces with the operating system, processor, and BIOS;

2. Explain how data is represented and stored on memory and external devices;

3. Explain how the processor accesses and executes the instructions and how the instructions access and process the data.

4. Explain how the program accesses external devices.

1, the code written is very difficult to understand, not well maintained;

2, it is easy to produce Bug, difficult to debug;

3, can only be optimized for a specific architecture and processor;

4, development efficiency is low, long and monotonous.

1. Ability to directly access hardware-related memory or I/O ports;

2. It can completely control the generated binary code without being limited by the compiler.

3, can carry on the more accurate control to the key code, avoids the deadlock which the thread common visit or the hardware equipment share causes;

4, according to a specific application of the code to do the best optimization, improve the speed of operation;

5, to maximize the function of the hardware;

6. Programs written in assembly language require significantly less storage space and execution time than programs written in high-level languages;

7. Assembly language enables programmers to complete very technical tasks. Using high-level languages ​​can be very difficult, if not impossible.

8. Although most software experts develop new application software in a high-level language (doing so, the program will be easier to write and maintain), but for the time-critical parts of the implementation, it is often necessary to rewrite in assembly language;

Resident programs (programs that reside in memory while other programs are running) and interrupt service routines (programs that process input and output) are almost all developed in assembly language.

Machine language is the computer's most primitive language. It is composed of codes of 0 and 1. When the CPU is working, it only knows the machine language, that is, the code of 0 and 1.

1. Can use the machine instructions to accurately describe the algorithm, and the programming quality is high.

2, the storage space is small.

3, the implementation of speed.

1, a large number of complicated and trivial details contain the programmers, so that they can not have more time and energy to engage in creative work, to perform more important tasks for them. Such as ensuring the correctness and efficiency of the program.

2, programmers must not only control the overall design of the program but also go deep into each part until the details of the realization, even if the superior intellectual programmers often overlooked each other, repeated mistakes, and thus the compiled program reliability is poor, and the development cycle is long .

3. Since the thinking and expression of programming in machine language is very different from people's habits, only programmers who have been trained for a longer period of time can be competent, making the program design highly rewarding.

4. Because its written form is all "secret" code, it is poorly readable and inconvenient for communication and cooperation.

5. Because it is heavily dependent on a specific computer, it is poor in portability and poor in reusability.

Machine language is a language that the machine can directly recognize.

Assembly language is machine-dependent and is a low-level language. Of course, you need to compile to make the machine run.

High-level languages ​​such as the C language are machine-independent and most people can write, but efficiency is not as good as compilation.

Elf Bar Vape

We sell 100% original ELFBAR vape. Elf bar disposable vapes sell very well, with good taste and beautiful appearance, and are recognized by consumers. The best-selling products, such as BC5000, BC4000, BC3000, Lost Mary 5000, and new product TE5000, are sold. TSVAPE is a Chinese supplier. If you are interested, please feel free to contact us.

Disposable Pod Wholesale Rechargeable Elf Bar BC5000

The ELF BAR Disaposable Vape Kit BC5000 comes in a library of flavors, each of which is a mixture of different fruit, menthol and drinks. Because of this impeccable variety of flavor combinations, there is a little something for everyone out there.

Specification:

650mAh Built-in Battery

Rechargeable

Efficient And Consistent Power Delivery

13ml Pre-filled E-juice

5% Nicotin Level

5000 Puffs

Features:

5000 Puffs per Disposable

E-Liquid Capacity: 13ml

650mAh Battery

Dual Mesh Coils

5% (50mg) Strength Only

Type: EGO

Material: Metal

Certification: FDA, CE, ROHS, FCC

Charging Type: Wireless

Start Mode: Sensor

Disposable: Disposable

Model NO.

Elf

Nicotin Concentration

5%

Display

Without Display

Fully Charged Time

Elf Bar Vape,Fume Infinity Disposable Vape ,Disposable Vape Pen Big Smoke ,Avs Big Smoke Oem

TSVAPE Wholesale/OEM/ODM , https://www.tsecigarette.com