The answer is OCR or optical character reader.
This device is used to electronically sorts mails by zip code.
This device reads texts from the papers or documents, images and pdf files, and then convert it into editable file.
1. Exactly three 1 s?

2. At most three
?

3. At least three 1 s?
Take a shortcut by using the previous answer:
4. An equal number of
and
?

<h3>
What is strings ?</h3>
The C programming language includes a set of functions executing operations on strings in its standard library. Different operations, such as copying, concatenation, tokenization, and searching are supported.
In C programming, a string exists as a sequence of characters terminated with a null character \0. For example char c[] = "c string"; When the compiler discovers a sequence of characters enclosed in the double quotation marks, it appends a null character \0 at the end by default. The C language does not have a distinctive "String" data type, the way some other languages such as C++ and Java do. Instead, C stores strings of characters as arrays of chars, completed by a null byte.
1. Exactly three 1 s?

2. At most three
?

3. At least three 1 s?
Take a shortcut by using the previous answer:
4. An equal number of
and
?

To learn more about strings refer to:
brainly.com/question/27251062
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An extent is a named portion of secondary memory that is allocated for the purpose of storing physical records: a. true.
<h3>What is a hard-disk drive?</h3>
A hard-disk drive can be defined as an electro-mechanical, non-volatile data storage device that is made up of magnetic disks (platters) that rotates at high speed.
In Computer technology, all hard-disk drives are commonly installed on computers and other digital service for the storage of files and to enable the booting of a computer through its operating system (OS).
<h3>What is a memory?</h3>
A memory can be defined as a terminology that is used to describe the available space on an electronic device that is typically used for the storage of data or any computer related information such as:
In this context, we can reasonably infer that it is true that an extent refers to a named portion of secondary memory that is typically allocated for the purpose of storing physical records.
Read more on memory here: brainly.com/question/24881756
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Primary storage refers to the main storage of the computer or main memory which is the random access memory or RAM. Secondary storage, on the other hand, refers to the external storage devices used to store data on a long-term basis.