WorksheetsMemory & Storage
Total questions: 25
Worksheet time: 13mins
Computer memory is non-permanent. For this reason, it’s called ___
volatile memory
random access memory
sequential memory
unstable memory
Any data written to storage, like your hard drive, will remain intact even if the power goes out. It’s ___
constant
dependable
non-volatile
stable
What was the earliest form of computer storage?
magnetic core memory
magnetostrictive delay lines
delay line memory
paper punch cards
By the 1940s, punch cards had largely standardized into a grid of 80 columns and 12 rows, allowing up to ___
96 bits of data
960 bits of data
96 bytes of data
960 bytes of data
The largest program ever punched onto cards, that we know of, was the US Military’s ___
Strategic Defense Initiative
OCE Officer Candidate Enrolment
SAGE Air Defense System
Ballistic Missile Defense program
Which form of memory, using liquid filled tubes, was developed by J. Presper Eckert in 1944?
mercury tube memory
delay line memory
magnetostrictive delay lines
magnetic core memory
Which liquid was commonly used to fill the tubes in delay line memory?
water
mercury
sulfuric acid
motor oil
Which early stored-program computer was completed in 1949 and used 128 Delay Lines?
ENIAC
EDVAC
UNIVAC
Atlas
In delay line memory, since you had to wait for a data bit to come around in the loop, it was called ___
nonvolatile or read-only memory
volatile or random access memory
sequential or cyclic-access memory
in-line or consecutive-access memory
Modern memory, where we can access any bit at any time, is known as ___
nonvolatile memory
random access memory
sequential memory
cyclic-access memory
Delay lines that used torsional waves on metal wires to represent data were called ___
random access delay lines
magnetic core memory
magnetostrictive delay lines
solid state delay lines
Which type of memory used loops of wire wound around donut-shaped metal cores?
solid state memory
donut-hole delay lines
magnetostrictive delay lines
magnetic core memory
Which computer demonstrated the first big use of random access core memory in 1953?
EDVAC
MIT’s Whirlwind 1
Manchester University's Atlas
UNIVAC
Magnetic core memory started at roughly $1 per bit in the mid-1950's, but fell to around 1 cent per bit by ___
the 1960s
the 1970s
the 1980s
the 1990s
In 1951, which commercially sold mainframe computer debuted with magnetic tape storage?
EDVAC
MIT’s Whirlwind 1
Manchester University's Atlas
UNIVAC
Since tape drives have to rewind or fast-forward to get to data you want, they are inherently ___
sequential
random access
fast
small
Which type of memory used a metal cylinder coated in a magnetic material for recording data?
magnetic drum memory
solid state memory
magnetic tape storage
magnetic core memory
Magnetic drums led to the development of which similar technology, with a different geometric configuration?
magnetic core memory
solid state drives
hard disk drives
magnetic tape memory
Released in 1956, what was the world's first computer with a disk drive?
EDVAC
MIT’s Whirlwind 1
IBM's RAMAC 305
UNIVAC
The time taken for a disk drive to access any block of data is known as the ___
half life
revolution duration
access pace
seek time
The ranking of computer storage based on response time is known as ___
a memory hierarchy
a storage grid
an allotment pyramid
a capacity triangle
Which close cousin of hard disks was used for portable storage from the mid 1970s up to the mid 90s?
the saggy disk
the droopy disk
the flabby disk
the floppy disk
Which type of storage has little physical divots in their surfaces that cause light to be reflected differently?
magnetic drums
hard disks
floppy disks
optical disks
Which type of storage is composed of integrated circuits with no moving parts, like a USB stick?
solid state devices
hard disks
floppy disks
optical disks
Because they contain no moving parts, SSD access times are typically under ___
1 second
1/10th of a second
1/100th of a second
1/1000th of a second
