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there is no such thing as a free lunch
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Used to say that it is not possible to get something that is desired or valuable without having to pay for it in some way.

=============================== to fall into Many problems fall naturally into two paradigms. They are either solved or unsolved. =============================== on the other hand On the other hand, if x>0, then x+1>0. =============================== in other words More data will improve the final r...

to see
see you soon, see you later

That's all with English grammar.
At the beginning you can learn Present Indefinite, Past Indefinite, Future Indefinite and practice to use them until you will make it perfect.
Then add another 2-3 Tenses.

Articles Singular, countable nouns always have an article – a/an or the. Examples of countable nouns: a land, a loaf of bread, a spoon, an actor, an apple, an hour (It is based on the pronunciation, not the spelling. Since the 'h' is silent, we use “an hour”). Examples of not countable nouns: salt, ...

Present and past participle clauses. Present participles are used for active clauses. Past participles are used for passive clauses. ========================================== A boy singing a song is my brother. (Present participle.) He left the room singing happily . (Present participle.) Opening t...

Adjectives Adjectives are like decorations for nouns. 'Present participle adjectives' are formed by adding the suffix '-ing' to the base form of the verb. 'Past participle adjectives' are usually formed by adding the suffix '-ed' or '-en' to verbs. The present participle (-ing form of the verb) refe...

Gerund We make gerunds by adding '-ing' to verbs. A gerund means a process. Gerunds do not take an article (a, an, the). You have to memorize that a gerund is neither a noun nor an adjective nor a verb. ======================== Reading makes you smarter. Having much money makes you rich. I like lear...

Modal verbs in conditional sentences. ================================ 'Could', 'would', 'should' are widely used modal verbs in conditional sentences. Could: “Could” is used to express possibility. Something that could happen is not necessarily something that must happen. Would: “Would” is used to ...

Modal verbs in questions. =================================== Use 'can' if you want to ask your peers or friends something. Can we go to a cinema today? =================================== Use 'could' when you speak with older, not familiar people. Could you tell me where is a hospital in this city?...

to stay
stay clean, stay calm, stay awake, stay focused, stay updated, stay in one place, stay with someone, stay on track, stay motivated

Modal verbs are as important as Tenses. Modal auxiliary verbs include: can, could, may, might, have to, must, ought to, shall, should, will and would. =================================== can It can be used to express ability or opportunity. I can swim. (I learned swimming and now I can do it). =====...

In the passive voice, the subject receives the action. ============================ Present Indefinite Tense Passive Voice My room is cleaned every day. ============================ Past Indefinite Tense Passive Voice This bookstore was built two years ago. ============================= Future Indef...

beat beat beaten become became become begin began begun bend bent bent bet bet bet bite bit bitten bleed bled bled blow blew blown break broke broken breed bred bred bring brought brought build built built burn burnt/burned burnt/burned buy bought bought catch caught caught choose chose chosen come ...

If you are a beginner you can start learning English grammar from the next 8 Tenses: 1.Present Indefinite Tense (Present Simple). 2.Past Indefinite Tense (Past Simple). 3.Future Indefinite Tense (Future Simple). 4.Present Continuous Tense. 5.Past Continuous Tense. 6.Future Continuous Tense. 7.Presen...

There are 16 Tenses in English. You don't need to learn all of them, since even native English speakers don't use 16 Tenses in their daily life. People speak using memorized patterns mostly. We recommend to memorize English words and patterns (80%) and learn English rules (20%). English has Active V...

We don't recommend to learn English grammar much. Still, it's a good idea to know some basic things of English grammar. Learn rules and take many tests, write short essays to practice English grammar. You can say a lot even with 2-3 Tenses when your vocabulary is rich.

the chicken and egg problem
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If you describe a situation as a chicken and egg situation, you mean that it is impossible to decide which of two things caused the other one.

bear in mind
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If you tell someone to bear something in mind or to keep something in mind, you are reminding or warning them about something important which they should remember.

keep in mind
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To be careful to remember something important.

================================== to get something from You have to find a TV channel to get the signal from. ================================== handy It can be handy to add some light to your video stream. ================================== to plan on We are planning on going to Australia this yea...

super-duper
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Extremely good.

under cover of something
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Hidden or protected by something.
He was working undercover at that time.

The real meat of things
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The most important part or the main part of something.

to carry
carry passengers, carry the victory, carry off, carry cargo, carry out, carry virus, carry on, carry over

to catch catch a cold, catch your breath (meaning: to try to breathe normally after hard exercise), catch fire (meaning: when something comes into contact with fire and starts to burn), catch someone’s eye (meaning: to make eye contact, or to attract attention), catch a ball, catch a bus/a train, ca...

to come come close, come complete with, come early, come first, come into view, come last, come on time, come to an agreement, come to decision, come cheap, come clean about (meaning: admit something to someone), come to life, come to an end, come to a realization, come up with (meaning: to suggest ...

to keep keep a diary, keep a promise, keep a secret, keep calm, keep control, keep in touch, keep quiet, keep on, keep something safe, keep in mind, keep away, keep your distance, keep track of things, keep up with, keep on top of things, keep up to date, keep someone posted, keep someone informed, ...

to have have a conversation, have a drink, have a good time, have a look, have a meal, have a nap, have a party, have a problem, have a rest, have a shower, have a meeting, have a baby, have a break, have a change, have a chat, have a coffee, have a dream, have a fit, have a headache, have a laugh, ...

to give give someone a call, give someone a ride, give someone a hug/a kiss, give an answer, give advice, give a speech/a talk, give permission, give credit, give someone a hard time, give notice, give someone pause, give rise to, give my best to someone, give priority, give evidence, give an opinio...

to be be absent from, be absolved of, be accepted as/to, be according to, be accused of, be accustomed to, be acquainted with, be adamant about, be addicted to, be affected by, be afraid of, be after, be alarmed at, be aligned with, be (all) set for, be amazed at/by, be an authority on, be angry abo...

to go go shopping, go fishing, go camping, go skiing, go hiking, go dancing, go swimming, go traveling, go running, go biking, go driving, go walking, go fishing, go hunting, go to the gym, go to the mall, go to the movies, go to the park, go to the beach, go to the concert, go to the restaurant, go...

to get get well, get a call, get a chance, get a clue, get a cold, get a degree/a diploma, get a job, get a joke, get a letter (receive), get angry, get dark, get around, get away, get better, get divorced, get drunk, get excited, get an idea, get married, get permission, get ready, get rid of, get ...

to do do (something) right/ wrong, do (someone) a favor, do good, do damage, do homework, do business, do the dishes, do a course, do a deal, do a good job, do a good turn, do a job on, do a kindness, do a puzzle, do a service, do accounts, do an injury, do badly, do credit, do damage, do errands, d...

to take take a break, take a job, take a test, take a bus, take a look, take a train, take a chance, take a picture/a photo, take a trip, take an exam/a quiz/a survey, take a plane, take a walk, take care, take a note, take part in something, take your time, take an interest, take advantage, take so...

to make make a fortune, make a sentence, make someone happy/angry, make sure, make money, make breakfast/lunch/dinner/food/coffee, make the bed, make a profit, make a decision, make friends, make an effort, make an offer, make a mess, make a mistake, make a living, make a call, make a habit, make a ...

We will post English collocations here. You can memorize them or note them down in your notebook.

Use the next block (delete spaces inside square brackets [ ])
[ code ]
int main();
[ /code ]

Code: Select all

int main();

Open esp32simulator. Create the folder "blinky" in the directory "esp32projects". Create "main.py", "diagram.json" inside the folder "blinky". Connect all components with wires in the same way, as in the picture. You can rotate a component by pressin...

You can make a real circuit and use blinking LED for a Christmas tree or put it in a toy police car and give it as a gift to children.

Create a new code file in SimulIDE. Copy-paste the program to the code window of SimulIDE (you may click the button Select All (from the previous post) and press Ctrl+С (to copy the code from the forum) and Ctrl+V (to paste the code)). Click "Save". Then enter "File name: blinking-led...

int led=13; //creates variable led:=13 void setup(){ pinMode(led, OUTPUT); //makes the pin 13 an output } void loop(){ digitalWrite(led, 1); //writes the HIGH value to the digital pin 13 delay(2000); //delay 2 seconds digitalWrite(led, 0); //writes the LOW value to the digital pin 13 delay(2000); }

int led=13; //creates variable led:=13 void setup(){ pinMode(led, OUTPUT); //makes the pin 13 an output } void loop(){ digitalWrite(led, 1); //writes the HIGH value to the digital pin 13 delay(2000); //delay 2 seconds digitalWrite(led, 0); //writes the LOW value to the digital pin 13 delay(2000); }...

Create the file "blinky.py" inside the folder "raspberryemulator" and copy-paste the next code (you may click the button Select Al and press Ctrl+С (to copy the code from the forum) and Ctrl+V (to paste the code)) from EmulatorGUI import GPIO #import RPi.GPIO as GPIO import time ...

Blinking LED in Arduino. Now we will create an Arduino project using a sketch. A sketch is the name that Arduino uses for a program. It's the unit of code that is uploaded to and run on an Arduino board. Create the folder "blinking-led-arduino" in the directory "my-avr". Create t...

Create inside the subfolder "blinking-led-arduino-asm_ino" the next files blinking-led-arduino-asm.ino, blinking-led-arduino-asm.S using Notepad. ====================== 1.Open Notepad 2.File->Save As... and browse to the subfolder "blinking-led-arduino-asm_ino" 3.File name: blink...

Arduino has an AVR microcontroller inside. It can be ATmega328, ATmega168 or ATmega8. We will prove it by creating our first Arduino program in Avrasm. Blinking LED in Arduino Avrasm. Create the folder "blinking-led-arduino-asm" in the directory "my-avr". Create the subfolder &qu...

Create a new code file in SimulIDE. Copy-paste the program to the code window of SimulIDE (you may click the button Select All (from the previous post) and press Ctrl+С (to copy the code from the forum) and Ctrl+V (to paste the code)). Click "Save". Then enter "File name: blinking-led...

#include <avr/io.h> //includes library, standard AVR header #define LED 0 //defines the constant LED. Now LED:=0 void delayms(volatile unsigned long j) { volatile unsigned long i; for(i=0; i < 157*j; i++); //loops i from 0 to 157*j } int main(void) { DDRD |= (1<<LED); //makes PORTD0 an output while...

#include <avr/io.h> //includes library, standard AVR header #define LED 0 //defines the constant LED. Now LED:=0 void delayms(volatile unsigned long j) { volatile unsigned long i; for(i=0; i < 157*j; i++); //loops i from 0 to 157*j } int main(void) { DDRD |= (1<<LED); //makes PORTD0 an output while...

Blinking LED in AVR GCC. Create the folder "blinking-led-avr-c" in the directory "my-avr". Create the subfolder "gcb_code" in the folder "blinking-led-avr-c". Open the program SimulIDE and click "Save Circuit As", then save your project to the folder...

Have a good day! I want you to post a short essay about yourself and your aims here. It will help us to pick up an individual plan for you. I'd like to see answers to the next questions in your essay. You can answer whatever you want (it's just an example of an essay, you may not follow it strictly)...

which way the wind blows
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What the real situation is.

on hand
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If someone or something is on hand, they are near and able to be used if they are needed.
Do you have a calculator on hand?

odds and ends
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Various things of different types, usually small and not important, or of little value.

man of his word
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A person who can be trusted to keep a promise; a reliable person.

nail something down
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To finalize

==================================== a night shift -Will you go to a night club with us? -No, I have a night shift today =================================== hands on -Will you do a work soon? -Yes, it's time to lay hands on it. =================================== with We will create a computer progr...

put your heart and soul into something
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If you put your heart and soul into something, you do it with a great deal of enthusiasm and energy.

"For" preposition (INTENDED FOR) Intended to be given to There's an email for you. There's a prize for the best scientists. =================================== "For" preposition (PURPOSE) Having the purpose of I’m going for some breakfast. This store is for the use of hotel gues...

When to use "For" in English.

put food on the table
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To provide enough money to cover basic necessities.

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roughly speaking
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Not being totally accurate (used as a phrase to specify).

at first sight.
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Used to describe your first impression of someone or something, usually to indicate that this first impression was wrong or incomplete.
Love at first sight

a drop in the bucket.
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A very small amount compared to the amount needed

bring home the bacon.
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To bring home the bacon means to earn the household income.

apple of one’s eye
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Special favorite, beloved person or thing.
The youngest was the apple of his father's eye.

castles in the air
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Plans that have very little chance of happening.

bottom line
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Main result/factor.
The bottom line is, I don't have enough money.

lose one's temper
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Lose self-control.

to be born in purple
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It was originally used to refer to babies born to the members of the royal family.

a slip of the tongue
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If you describe something you said as a slip of the tongue, you mean that you said it by mistake.

take one's breath away
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To make someone feel surprised and excited.
The beautiful new cinema took my breath away.

which way the wind blows ------------------------------------- If a person tries to discover which way the wind blows/is blowing, he/she tries to discover information about a situation, especially other people's opinions, before he/she takes action. John knows which way the wind blows and always act...

white lie
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A lie that is told in order to be polite or to stop someone from being upset by the truth

educational circles
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You can use it to refer to people or organizations who are involved in education.

Chicken and egg problem.
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If you describe a situation as a chicken and egg situation, you mean that it is impossible to decide which of two things caused the other one.

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