Pokračovať do košíka
Zákaznícka podpora:+421 905 391 964info@presmont.it
    Domov / Stolné počítače

    Stolné počítače, Strana 10

    Najpredávanejšie

    HP Z2 TWR G9/700W, i7-14700K vPro (20 cores, 5.60GHz), 32GB, RTX 4080 Super/16GB, W11Pro, SSD 1TB, 3/3/3 Warranty
    HP Z2 TWR G9/700W, i7-14700K vPro (20 cores, 5.60GHz), 32GB, RTX 4080 Super/16GB, W11Pro, SSD 1TB, 3/3/3 Warranty
    Skladom (expedícia do 24 hod.) (5 ks)
    Kód: HPA2JK8ES-BCM
     
    €4 459,20
    HP ProOne 245 G10 AiO 23.8 NT, Ryzen 3 7320U, 1920x1080/IPS, UMA, 8GB, SSD 512GB, W11H, 1-1-1, WiFi/BT, White
    HP ProOne 245 G10 AiO 23.8 NT, Ryzen 3 7320U, 1920x1080/IPS, UMA, 8GB, SSD 512GB, W11H, 1-1-1, WiFi/BT, White
    Dostupnosť na dotaz
    Kód: HP937D7EA-BCM
     
    €754,80
    HP Pro Mini 400 G9, i5-14500T, UMA, 16GB, SSD 512GB, W11Pro, 3-3-3, WiFi/BT
    HP Pro Mini 400 G9, i5-14500T, UMA, 16GB, SSD 512GB, W11Pro, 3-3-3, WiFi/BT
    Dostupnosť na dotaz
    Kód: HP9H715ET-BCM
     
    €910,80
    Lenovo ThinkCentre neo/50q Gen 4/Tiny/i3-1215U/8GB/256GB SSD/UHD/W11P/3R
    Lenovo ThinkCentre neo/50q Gen 4/Tiny/i3-1215U/8GB/256GB SSD/UHD/W11P/3R
    Expedícia do 24 hodín (4 ks)
    Kód: LNP12LN001UCKS
     
    €527,63
    TC Neo 50s SFF/i5-13400/8GB/512/INT/DVD/W11P
    TC Neo 50s SFF/i5-13400/8GB/512/INT/DVD/W11P
    Expedícia do 24 hodín (4 ks)
    Kód: LNP12JH001ECKS
     
    €664,84
    HP 27/27-cr1007nc/27''/FHD/U7-155U/32GB/1TB SSD/4C-iGPU/W11H/Black/2R
    HP 27/27-cr1007nc/27''/FHD/U7-155U/32GB/1TB SSD/4C-iGPU/W11H/Black/2R
    Expedícia do 24 hodín (>5 ks)
    Kód: HP-B22DJEA
     
    €1 398,43
    HP 27/27-cr1006nc/27''/FHD/U5-125U/16GB/1TB SSD/4C-iGPU/W11H/White/2R
    HP 27/27-cr1006nc/27''/FHD/U5-125U/16GB/1TB SSD/4C-iGPU/W11H/White/2R
    Expedícia do 24 hodín (>5 ks)
    Kód: HP-B22DHEA
     
    €1 145,69
    ASUS NUC/14 Pro (NUC14RVHC3000R2)/Mini/3-100U/bez RAM/UHD/bez OS/3R
    ASUS NUC/14 Pro (NUC14RVHC3000R2)/Mini/3-100U/bez RAM/UHD/bez OS/3R
    Expedícia do 24 hodín (5 ks)
    Kód: 185CNUC14PROI3
     
    €431,88
    ASUS NUC/14 Pro+ (NUC14RVSU7000R2)/Mini/U7-155H/bez RAM/Arc Xe/bez OS/3R
    Skladom (expedícia do 24 hod.) (1 ks)
    Kód: 185CNUC14PRO-I7
     
    €832,50
    ASUS NUC/13 Pro (NUC13ANHi3)/Mini/i3-1315U/bez RAM/UHD/bez OS/3R
    ASUS NUC/13 Pro (NUC13ANHi3)/Mini/i3-1315U/bez RAM/UHD/bez OS/3R
    Expedícia do 24 hodín (4 ks)
    Kód: 185CNUC13PROI32
     
    €395,74
    Zobraziť viac produktov
    659 položiek celkom
    Dell OptiPlex 7420 AllinOne|160W|TPM|i7 14700|16GB|512GB SSD|Integrated|Adj Stand|WLAN|vPro|Kb&Mse|W11 Pro|3Y ProSpt
    Dell OptiPlex 7420 AllinOne|160W|TPM|i7 14700|16GB|512GB SSD|Integrated|Adj Stand|WLAN|vPro|Kb&Mse|W11 Pro|3Y ProSpt
    Expedícia do 24 hodín (3 ks)
    €1 380,72

    Part number (PN): W51W0

    Kód: SKDELLW51W0
    HP ProOne 440 G9 AiO 23.8 NT, i5-12400T, 23.8 1920x1080/IPS, Intel HD, 8GB, SSD 512GB, W11H, 3-3-3, WiFi+BT
    HP ProOne 440 G9 AiO 23.8 NT, i5-12400T, 23.8 1920x1080/IPS, Intel HD, 8GB, SSD 512GB, W11H, 3-3-3, WiFi+BT
    Dostupnosť na dotaz
    €886,80

    Part number (PN): 6D3B0EA#BCM

    Kód: HP6D3B0EA-BCM
    HP Pro Mini 260 G9, i5-1235U, Intel HD, 8GB, SSD 256GB, FDOS, 1-1-1, WiFi+BT
    HP Pro Mini 260 G9, i5-1235U, Intel HD, 8GB, SSD 256GB, FDOS, 1-1-1, WiFi+BT
    Skladom (expedícia do 24 hod.) (>5 ks)
    €550,80

    Part number (PN): 6D2Z9EA#BCM

    Kód: HP6D2Z9EA-BCM
    HP Pro Mini 260 G9, i3-1215U, Intel HD, 8GB, SSD 256GB, FDOS, 1-1-1, WiFi+BT
    HP Pro Mini 260 G9, i3-1215U, Intel HD, 8GB, SSD 256GB, FDOS, 1-1-1, WiFi+BT
    Skladom (expedícia do 24 hod.) (>5 ks)
    €478,80

    Part number (PN): 6D302EA#BCM

    Kód: HP6D302EA-BCM
    ASUS ExpertCenter/E1 AiO E1600/15,6''/1366 x 768/T/N4500/4GB/128GB SSD/UHD/bez OS/Black/2R
    ASUS ExpertCenter/E1 AiO E1600/15,6''/1366 x 768/T/N4500/4GB/128GB SSD/UHD/bez OS/Black/2R
    Dostupnosť na dotaz
    €343,21

    Part number (PN): E1600WKAT-BD088M

    Kód: 185A-E1600-BD088M
    ThinkCentre Tiny Sandwich Kit II
    ThinkCentre Tiny Sandwich Kit II
    Dostupnosť na dotaz
    €41,03

    Part number (PN): 4XH0N04098

    Kód: LNZ4XH0N04098
    ASUS ExpertCenter/E5 AiO E5402/23,8''/FHD/i5-1340P/16GB/256GB SSD/Iris Xe/W11P EDU/Black/2R
    ASUS ExpertCenter/E5 AiO E5402/23,8''/FHD/i5-1340P/16GB/256GB SSD/Iris Xe/W11P EDU/Black/2R
    Dostupnosť na dotaz
    €860,94

    Part number (PN): E5402WVAK-BPC019XA

    Kód: 185A-E540-BPC019XA
    Acer Aspire/C24-1800/23,8''/FHD/i3-1305U/8GB/512GB SSD/UHD/bez OS/Black/1R
    Acer Aspire/C24-1800/23,8''/FHD/i3-1305U/8GB/512GB SSD/UHD/bez OS/Black/1R
    Dostupnosť na dotaz
    €481,16

    Part number (PN): DQ.BLFEC.002

    Kód: 18744445103I79
    Acer Veriton/Z2514G/23,8''/FHD/i5-12450H/8GB/512GB SSD/UHD Xe/W11P/Black/1R
    Acer Veriton/Z2514G/23,8''/FHD/i5-12450H/8GB/512GB SSD/UHD Xe/W11P/Black/1R
    Expedícia do 24 hodín (>5 ks)
    €740,76

    Part number (PN): DQ.R1SEC.002

    Kód: 18740189O351139G
    Acer Veriton/Z2514G/23,8''/FHD/i3-1305U/4GB/512GB SSD/UHD/W11P/Black/1R
    Acer Veriton/Z2514G/23,8''/FHD/i3-1305U/4GB/512GB SSD/UHD/W11P/Black/1R
    Expedícia do 24 hodín (3 ks)
    €626,88

    Part number (PN): DQ.VZPEC.003

    Kód: 18740189O351138G
    Acer Chromebox/CXI5/Mini/i5-1235U/8GB/256GB SSD/Intel UHD/Chrome/1R
    Acer Chromebox/CXI5/Mini/i5-1235U/8GB/256GB SSD/Intel UHD/Chrome/1R
    Dostupnosť na dotaz
    €501,98

    Part number (PN): DT.Z2AEC.002

    Kód: 187401790VN46CH01
    MSI PRO/AP272P 14M-641EU/27''/FHD/i3-14100/8GB/256GB SSD/UHD 730/W11H/White/2R
    MSI PRO/AP272P 14M-641EU/27''/FHD/i3-14100/8GB/256GB SSD/UHD 730/W11H/White/2R
    Expedícia do 24 hodín (4 ks)
    €773,26

    Part number (PN): PRO AP272P 14M-641EU

    Kód: 18820953
    MSI PRO/AP272P 14M-640EU/27''/FHD/i3-14100/8GB/256GB SSD/UHD 730/W11H/Black/2R
    MSI PRO/AP272P 14M-640EU/27''/FHD/i3-14100/8GB/256GB SSD/UHD 730/W11H/Black/2R
    Expedícia do 24 hodín (3 ks)
    €773,26

    Part number (PN): PRO AP272P 14M-640EU

    Kód: 18820952
    ASUS ExpertCenter/D7 D700SE/SFF/i3-13100/8GB/256GB SSD/UHD 730/W11P EDU/3R
    ASUS ExpertCenter/D7 D700SE/SFF/i3-13100/8GB/256GB SSD/UHD 730/W11P EDU/3R
    Expedícia do 24 hodín (>5 ks)
    €554,14

    Part number (PN): D700SEES-313100009XA

    Kód: 185D-D7-13100009XA
    ASUS ExpertCenter/E5 AiO E5402/23,8''/FHD/5-120U/16GB/512GB SSD/Iris Xe/W11P/Black/2R
    ASUS ExpertCenter/E5 AiO E5402/23,8''/FHD/5-120U/16GB/512GB SSD/Iris Xe/W11P/Black/2R
    Expedícia do 24 hodín (1 ks)
    €1 014,35

    Part number (PN): E5402WVARK-BPC004X

    Kód: 185A-E5402-BPC004X
    Premio Basic 314 S1000 (i3-14100/16GB/1000GB/W11P)
    Premio Basic 314 S1000 (i3-14100/16GB/1000GB/W11P)
    Expedícia do 24 hodín (3 ks)
    €634,74

    Part number (PN): 11382041

    Kód: 11382041
    Premio Basic 514 S1000 (i5-14400/16GB/1000GB/W11P)
    Premio Basic 514 S1000 (i5-14400/16GB/1000GB/W11P)
    Dostupnosť na dotaz
    €725,94

    Part number (PN): 11382040

    Kód: 11382040
    Premio Basic 514 S1000 EDU (i5-14400/16GB/1000GB/W11P)
    Premio Basic 514 S1000 EDU (i5-14400/16GB/1000GB/W11P)
    Dostupnosť na dotaz
    €604,74

    Part number (PN): 11382014

    Kód: 11382014
    Lenovo Legion/T5 26IRB8/Tower/i5-14400F/32GB/1TB SSD/RTX 4060Ti/W11H/3R
    Lenovo Legion/T5 26IRB8/Tower/i5-14400F/32GB/1TB SSD/RTX 4060Ti/W11H/3R
    Expedícia do 24 hodín (>5 ks)
    €1 350,91

    Part number (PN): 90UU00QNMK

    Kód: LNP90UU00QNMK
    Lenovo Legion/T5 26IRB8/Tower/i5-14400F/16GB/1TB SSD/RTX 4060/W11H/3R
    Lenovo Legion/T5 26IRB8/Tower/i5-14400F/16GB/1TB SSD/RTX 4060/W11H/3R
    Expedícia do 24 hodín (>5 ks)
    €1 220,57

    Part number (PN): 90UU00QMMK

    Kód: LNP90UU00QMMK
    Lenovo Legion/T5 26ARA8/Tower/R5-7600/32GB/1TB SSD/RTX 4070S/W11H/3R
    Lenovo Legion/T5 26ARA8/Tower/R5-7600/32GB/1TB SSD/RTX 4070S/W11H/3R
    Expedícia do 24 hodín (2 ks)
    €1 857,50

    Part number (PN): 90UY009BMK

    Kód: LNP90UY009BMK
    Acer Nitro/N50-650/Mini TWR/i7-13700F/16GB/1TB SSD/RTX 3060Ti/W11H/1R
    Acer Nitro/N50-650/Mini TWR/i7-13700F/16GB/1TB SSD/RTX 3060Ti/W11H/1R
    Dostupnosť na dotaz
    €1 177,90

    Part number (PN): DG.E3GEC.005

    Kód: 187443004TC166I69
    Acer Nitro/N50-130/Midi/R7-7700/32GB/1TB SSD/RX 7600/W11H/1R
    Acer Nitro/N50-130/Midi/R7-7700/32GB/1TB SSD/RX 7600/W11H/1R
    Expedícia do 24 hodín (>5 ks)
    €1 191,37

    Part number (PN): DG.E3QEC.002

    Kód: 18744300527M02
    Acer Nitro/N50-130/Midi/R5-7600/16GB/1TB SSD/RX 7600/W11H/1R
    Acer Nitro/N50-130/Midi/R5-7600/16GB/1TB SSD/RX 7600/W11H/1R
    Expedícia do 24 hodín (>5 ks)
    €1 008,92

    Part number (PN): DG.E3QEC.001

    Kód: 18744300527M01
    Acer Predator/Orión X POX-650/Micro/i7-13700F/32GB/1TB SSD/RTX 4080/W11H/1R
    Acer Predator/Orión X POX-650/Micro/i7-13700F/32GB/1TB SSD/RTX 4080/W11H/1R
    Expedícia do 24 hodín (2 ks)
    €2 843,21

    Part number (PN): DG.E3REK.003

    Kód: 1874135POX602
    ASUS ExpertCenter/D7 D700SE/SFF/i5-14400/16GB/512GB SSD/UHD 730/W11P/3R
    ASUS ExpertCenter/D7 D700SE/SFF/i5-14400/16GB/512GB SSD/UHD 730/W11P/3R
    Dostupnosť na dotaz
    €841,76

    Part number (PN): D700SER-514400029X

    Kód: 185D-D7-514400029X
    ASUS ExpertCenter/D7 D700ME/Mini TWR/i5-14400/16GB/512GB SSD/UHD 730/W11P/3R
    ASUS ExpertCenter/D7 D700ME/Mini TWR/i5-14400/16GB/512GB SSD/UHD 730/W11P/3R
    Expedícia do 24 hodín (>5 ks)
    €870,53

    Part number (PN): D700MER-514400013X

    Kód: 185D-D7-514400013X
    ASUS PN/ExpertCenter PN53-S7165AD/Mini/R7-7735HS/16GB/512GB SSD/AMD int/W11P/3R
    ASUS PN/ExpertCenter PN53-S7165AD/Mini/R7-7735HS/16GB/512GB SSD/AMD int/W11P/3R
    Dostupnosť na dotaz
    €845,98

    Part number (PN): 90MS02H1-M00560

    Kód: 185BPN53-S7165AD
    ASUS PN/ExpertCenter PN53-S5168AD/Mini/R5-7535HS/16GB/512GB SSD/AMD int/W11P EDU/3R
    ASUS PN/ExpertCenter PN53-S5168AD/Mini/R5-7535HS/16GB/512GB SSD/AMD int/W11P EDU/3R
    Dostupnosť na dotaz
    €704,26

    Part number (PN): 90MS02H1-M00590

    Kód: 185BPN53-S5168AD
    ASUS ChromeBox/5 (CN67)/Mini/i3-1220P/8GB/128GB SSD/UHD/Chrome/3R
    ASUS ChromeBox/5 (CN67)/Mini/i3-1220P/8GB/128GB SSD/UHD/Chrome/3R
    Dostupnosť na dotaz
    €576,79

    Part number (PN): 90MS02N1-M002A0

    Kód: 185BCHROME5G3103UN
    X-Diablo Gamer/R7 4070 Black/Midi/R7-7700X/32GB/2TB SSD/RTX 4070S/W11H/3R
    X-Diablo Gamer/R7 4070 Black/Midi/R7-7700X/32GB/2TB SSD/RTX 4070S/W11H/3R
    Expedícia do 24 hodín (3 ks)
    €1 853,60

    Part number (PN): 11554351

    Kód: 11554351
    X-Diablo Gamer/R7 4070 White/Midi/R7-7700X/32GB/2TB SSD/RTX 4070S/W11H/3R
    X-Diablo Gamer/R7 4070 White/Midi/R7-7700X/32GB/2TB SSD/RTX 4070S/W11H/3R
    Expedícia do 24 hodín (1 ks)
    €1 853,60

    Part number (PN): 11554350

    Kód: 11554350
    Lenovo IdeaCentre/AIO 24ARR9/23,8''/FHD/R5-7535HS/16GB/1TB SSD/AMD int/W11H/Grey/2R
    Lenovo IdeaCentre/AIO 24ARR9/23,8''/FHD/R5-7535HS/16GB/1TB SSD/AMD int/W11H/Grey/2R
    Expedícia do 24 hodín (1 ks)
    €775,79

    Part number (PN): F0HR001DCK

    Kód: LNPF0HR001DCK
    Lenovo IdeaCentre/AIO 24IRH9/23,8''/FHD/i3-1315U/8GB/1TB SSD/UHD/W11H/Grey/2R
    Lenovo IdeaCentre/AIO 24IRH9/23,8''/FHD/i3-1315U/8GB/1TB SSD/UHD/W11H/Grey/2R
    Expedícia do 24 hodín (>5 ks)
    €699,19

    Part number (PN): F0HN002SCK

    Kód: LNPF0HN002SCK
    X-Diablo Gamer/714 4070 PBA/Midi/i7-14700F/32GB/1TB SSD/RTX 4070/W11H/3R
    X-Diablo Gamer/714 4070 PBA/Midi/i7-14700F/32GB/1TB SSD/RTX 4070/W11H/3R
    Expedícia do 24 hodín (3 ks)
    €1 669

    Part number (PN): 115543490

    Kód: 115543490
    Lenovo IdeaCentre/AIO 27IRH9/27''/FHD/i3-1315U/16GB/1TB SSD/UHD/W11H/Grey/2R
    Lenovo IdeaCentre/AIO 27IRH9/27''/FHD/i3-1315U/16GB/1TB SSD/UHD/W11H/Grey/2R
    Expedícia do 24 hodín (>5 ks)
    €767,74

    Part number (PN): F0HM002FCK

    Kód: LNPF0HM002FCK
    ASUS ExpertCenter/E3 AiO E3402/23,8''/FHD/i3-1315U/8GB/512GB SSD/UHD/W11P/Black/2R
    ASUS ExpertCenter/E3 AiO E3402/23,8''/FHD/i3-1315U/8GB/512GB SSD/UHD/W11P/Black/2R
    Dostupnosť na dotaz
    €611,66

    Part number (PN): E3402WVAK-BPC023X

    Kód: 185A-E3402-BPC023X
    ASUS ExpertCenter/E3 AiO E3402/23,8''/FHD/i5-1335U/8GB/512GB SSD/Intel UHD/W11H/Black/2R
    ASUS ExpertCenter/E3 AiO E3402/23,8''/FHD/i5-1335U/8GB/512GB SSD/Intel UHD/W11H/Black/2R
    Expedícia do 24 hodín (1 ks)
    €650,02

    Part number (PN): E3402WVAK-BPC023W

    Kód: 185A-E3402-BPC023W
    ASUS AiO/A5702WVA/27''/FHD/i7-1360P/32GB/1TB SSD/Iris Xe/W11P/Black/2R
    ASUS AiO/A5702WVA/27''/FHD/i7-1360P/32GB/1TB SSD/Iris Xe/W11P/Black/2R
    Expedícia do 24 hodín (>5 ks)
    €1 196,51

    Part number (PN): A5702WVAK-BPE016X

    Kód: 185A-A5702-BPE016X
    Acer Veriton/VS2710G/Midi/i5-13400/8GB/512GB SSD/UHD 730/W11P EDU/1R
    Acer Veriton/VS2710G/Midi/i5-13400/8GB/512GB SSD/UHD 730/W11P EDU/1R
    Expedícia do 24 hodín (>5 ks)
    €595,04

    Part number (PN): DT.VY4EC.003

    Kód: 187401800A2
    ASUS ExpertCenter/E5 AiO E5402/23,8''/FHD/i5-1340P/8GB/512GB SSD/Intel UHD/W11P EDU/Black/2R
    ASUS ExpertCenter/E5 AiO E5402/23,8''/FHD/i5-1340P/8GB/512GB SSD/Intel UHD/W11P EDU/Black/2R
    Dostupnosť na dotaz
    €841,76

    Part number (PN): E5402WVAK-BPC010XA

    Kód: 185A-E540-BPC010XA
    Lenovo ThinkCentre M/M75s Gen 2/SFF/R5PRO-4650G/8GB/256GB SSD/AMD int/bez OS/1R
    Lenovo ThinkCentre M/M75s Gen 2/SFF/R5PRO-4650G/8GB/256GB SSD/AMD int/bez OS/1R
    Dostupnosť na dotaz
    €293,75

    Part number (PN): 11JA001BCK

    Kód: LNP11JA001BCK
    Lenovo IdeaCentre/AIO 5 24IAH7/23,8''/FHD/i5-12500H/16GB/512GB SSD/Iris Xe/W11H/Grey/3R
    Lenovo IdeaCentre/AIO 5 24IAH7/23,8''/FHD/i5-12500H/16GB/512GB SSD/Iris Xe/W11H/Grey/3R
    Dostupnosť na dotaz
    €919,57

    Part number (PN): F0GR004CCK

    Kód: LNPF0GR004CCK
    Lenovo ThinkCentre M/AiO M90a Gen 5/23,8''/FHD/T/i7-14700/16GB/1TB SSD/UHD 770/W11P/Black/3R
    Lenovo ThinkCentre M/AiO M90a Gen 5/23,8''/FHD/T/i7-14700/16GB/1TB SSD/UHD 770/W11P/Black/3R
    Dostupnosť na dotaz
    €1 346,04

    Part number (PN): 12SH000PCK

    Kód: LNP12SH000PCK
    ASUS ExpertCenter/D7 D700ME/Mini TWR/i5-13500/16GB/512GB SSD/UHD 770/W11P/3R
    ASUS ExpertCenter/D7 D700ME/Mini TWR/i5-13500/16GB/512GB SSD/UHD 770/W11P/3R
    Expedícia do 24 hodín (>5 ks)
    €841,76

    Part number (PN): D700ME-513500085X

    Kód: 185D-D7-513500085X
    ASUS PN/PN41-BC034ZVS1/Mini/N5100/4GB/128GB SSD/UHD/W11P/3R
    ASUS PN/PN41-BC034ZVS1/Mini/N5100/4GB/128GB SSD/UHD/W11P/3R
    Expedícia do 24 hodín (>5 ks)
    €234,28

    Part number (PN): 90MS0271-M004N0

    Kód: 185BPN41-BC034ZVS1
    HP Pavilion 24-ca0000nc, R5-5500U, 23.8 1920x1080/IPS, UMA, 16GB, SSD 512GB, W11H, 2-2-0, White, WiFi+BT
    HP Pavilion 24-ca0000nc, R5-5500U, 23.8 1920x1080/IPS, UMA, 16GB, SSD 512GB, W11H, 2-2-0, White, WiFi+BT
    Dostupnosť na dotaz
    €943,63

    Part number (PN): 60J07EA#BCM

    Kód: HP60J07EA-BCM
    Acer VM4690G: i5-12400/32G/512+2TB/
    Acer VM4690G: i5-12400/32G/512+2TB/
    Expedícia do 24 hodín (3 ks)
    €668,51

    Part number (PN): DT.VWSEC.005

    Kód: 187401790VN4680I63
    Hore
    Ďalšie produkty
    dpd
    Garancia doručenia
    nepoškodeného tovaru
    Expedícia do 24 hodín
    Expedícia do 24 hodín
    na akúkoľvek adresu
    TEAMVI
    Možnosť pomoci na diaľku
    Inštalácia zariadenia a softvéru