Ŝi konservas la programon en la komputilo.

Ŝi is the Esperanto third-person singular pronoun for a female person: she.

A few related pronouns:

• li = he
• ĝi = it
• ili = they
• mi = I
• vi = you

The letter ŝ is a separate Esperanto letter, pronounced like sh in she. So ŝi sounds roughly like shee.

The ending -as marks the present tense in Esperanto.

So:

• konservi = to save / to keep / to store
• konservas = saves / keeps / is saving
• konservis = saved / kept
• konservos = will save / will keep

In Esperanto, all present-tense verbs use -as, regardless of the subject:

• mi konservas = I save
• ŝi konservas = she saves
• ili konservas = they save

The -n ending marks the direct object. That is, it shows what is being acted on.

In this sentence:

• Ŝi konservas = She saves
• la programon = the program

So the program is the thing being saved, and that is why it gets -n.

Compare:

• La programo funkcias. = The program works.
  Here programo is the subject, so no -n.
• Ŝi konservas la programon. = She saves the program.
  Here programon is the object, so it takes -n.

La is the Esperanto definite article, meaning the.

So:

• la programon = the program
• la komputilo = the computer

Esperanto has only one article, la, for all genders and numbers. It does not change:

• la viro = the man
• la virino = the woman
• la programoj = the programs

Also, Esperanto has no indefinite article. So programo can mean a program or just program depending on context.

Because this phrase shows location, not movement.

• en la komputilo = in the computer
• en la komputilon = into the computer

The accusative -n can also be used with some prepositions to show motion toward something. But here the idea is that the program is being saved in the computer, not moving into it in a spatial sense, so en la komputilo is the normal form.

Esperanto often uses en where English uses in or sometimes on, depending on how the situation is viewed.

With digital storage, en la komputilo is very natural because the program is thought of as being inside the computer, in its memory or storage.

So:

• en la komputilo = in the computer

English says on the computer, but Esperanto does not always match English prepositions exactly. It is better to learn the Esperanto expression as its own pattern.

Yes. Konservi can mean keep, preserve, store, or save, depending on context.

In a computer context, it often corresponds to save or store:

• konservi dosieron = save a file
• konservi programon = save/store a program

Outside computing, it can also mean things like:

• konservi trankvilon = keep calm
• konservi manĝaĵon = preserve food

So the exact English translation depends on the situation.

Yes. Esperanto word order is fairly flexible because endings show the grammatical roles.

The neutral order here is:

• Ŝi konservas la programon en la komputilo.

But you could also say:

• La programon ŝi konservas en la komputilo.
• En la komputilo ŝi konservas la programon.

These variations may change emphasis, but the -n on programon still shows that it is the object.

Still, for learners, the basic subject–verb–object order is the safest and most natural starting point.

The ending -o marks a noun in Esperanto.

So:

• komputilo = computer
• programo = program

Esperanto uses regular word endings:

• -o = noun
• -a = adjective
• -e = adverb
• -i = infinitive verb

That is why:

• komputilo is a thing, a noun
• konservi is a verb in the infinitive form

Yes. It is built from parts:

• komput- = compute
• -il- = tool or instrument
• -o = noun

So komputilo literally means something like a tool for computing.

This is a very common Esperanto pattern:

• tranĉi = to cut → tranĉilo = knife, cutting tool
• skribi = to write → skribilo = writing instrument
• komputi = to compute → komputilo = computer

Because everything here is singular.

• ŝi = she, one person
• la programon = the program, one program
• la komputilo = the computer, one computer

If something were plural, Esperanto would add -j:

• la programoj = the programs
• la komputiloj = the computers

If a plural noun is also a direct object, it takes both endings:

• la programojn = the programs

Grammatically, Esperanto sometimes allows nouns without la, but in this sentence that would usually sound less natural unless the context is very general or indefinite.

• la programon suggests a specific program
• la komputilo suggests a specific computer

Without la, the sentence feels more like:

• She saves a program in a computer

That may be possible in some contexts, but it is a different nuance from the program and the computer.

Yes. It is a normal, complete sentence.

Its structure is straightforward:

• Ŝi = subject
• konservas = verb
• la programon = direct object
• en la komputilo = prepositional phrase showing location

So for a learner, it is a very good example of basic Esperanto sentence structure.